National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 1 of 17
HVAC DESIGN CRITERIA
03
2019-05-04
Issued for Construction
M. Ghaderi
Kh. Jafari
M.J.Habibian
02
2019-04-30
Issued for Approval
M. Ghaderi
Kh. Jafari
M.J.Habibian
01
2019-04-17
Issued for Approval
M. Ghaderi
Kh. Jafari
M.J.Habibian
00
2019-03-09
Issued for Review
M. Ghaderi
Kh. Jafari
M.J.Habibian
Rev.
Date
Purpose of Issue
Prepared By
Checked By
Approved By
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 2 of 17
Tabulation of Revised Page
Sheet
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Revisions
00
01
02
03
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Sheet
04
05
Revisions
00
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
01
02
03
04
05
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
Rev : 03 Date:2019-05-04
Page 3 of 17
Table of Contents
1
Introduction ...................................................................................................................... 4
1.1
Scope .......................................................................................................................... 4
2
Reference ........................................................................................................................... 4
3
Document Precedence ...................................................................................................... 5
4
Design Parameters ............................................................................................................ 5
5
HEATING, COOLING AND VENTILATION SYSTEM ........................................... 6
6
Heat Gains ....................................................................................................................... 10
7
Noise levels ...................................................................................................................... 11
8
Ductwork and Fans calculation..................................................................................... 11
9
PIPING AND PLUMBING SYSTEM SELECTION/DESIGN ................................. 12
9.1
Design principles ...................................................................................................... 12
9.2
Selection Principles .................................................................................................. 14
9.3
Pipe insulation .......................................................................................................... 15
9.4
Supports .................................................................................................................... 16
10
ELECTRICAL MOTORS AND PANELS .................................................................. 16
11
Soft Ware......................................................................................................................... 16
12
Standard .......................................................................................................................... 17
13
Seismicity ......................................................................................................................... 17
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
1
Introduction
1.1
Scope
Rev : 03 Date:2019-05-04
Page 4 of 17
This specification defines the minimum requirements for Basic HVAC Design of Flotation
project, located in Sarcheshmeh Copper Complex in Kerman Province, Iran and covers the
Heating Cooling & Air conditioning in the Buildings. In every section of the report the
mechanical utilities of buildings are considered and the necessary systems are proposed.
This document is based upon the terms of the CONTRACT and does not alter the CONTRACT
in any respects. It is the intent of these design criteria to supplement the “code” with certain
conditions not fully covered their in.
2
Reference
Design, materials, fabrication, inspection, testing and certification ought to be in accordance
with the requirements of the specified codes. Codes specified ought to be taken as the latest
issue including all appendices issued at the date of order. The VENDOR is responsible for
implementing any regulations concerning the design, fabrication, testing and inspection of the
packaged equipment, which are mandatory to any applicable statutory or local regulations.
It is the VENDOR'S responsibility to ensure his own compliance and that of his SUBVENDORS with the applicable codes, standards and regulations.
The following codes and standards ought to be used in conjunction with those listed within the
equipment specific requisition and attachments.


American Society of Heating, Refrigeration and Air-conditioning Engineers (ASHRAE)
for HVAC systems.
1Handbook Fundamentals (2005)
2Handbook Applications (2007),
3Handbook Systems and Equipment (2008)
4ASHRAE Standard 62.1 (2007), Ventilation for Acceptable Indoor Air
Quality
5ASHRAE Standard 55, Thermal environment Air Quality
National Fire Protection Association
1- NFPA 90/A, Standard for the Installation of Air-Conditioning and Ventilating
Systems
2- NFPA 90/B, Standard for the Installation of Warm Air Heating and AirConditioning Systems
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA

Page 5 of 17
Sheet Metal and Air-conditioning Contractors’ National Association (SMACNA) for
ducting
1Rectangular industrial duct
2Round industrial duct
3HVAC Duct Construction – Metal & Flexible
3
Document Precedence
In the event of a conflict of technical requirements within the requisition documents, the
order of precedence must be:
1) Local Authority or Statutory Regulations
2) Inquiry / Requisition / Purchase Order
3) Referenced Design Codes and Standards
 Notwithstanding the above, it is the VENDOR’S responsibility to bring to the notice of
the CONTRACTOR any conflict between the above documents.
4
Design Parameters
Flotation project, located in Sarcheshmeh Copper Complex in Kerman Province, Iran. The
design parameter is:
City Name ............................................................................................. Darezar
Location ....................................................................................................... Iran
Latitude ....................................................................................................... 30.0
Longitude .................................................................................................... 55.9
Elevation ................................................................................................. 8336.0
Summer Design Dry-Bulb ........................................................................... 95.0
Summer Coincident Wet-Bulb .................................................................... 55.7
Summer Daily Range ................................................................................. 21.0
Winter Design Dry-Bulb .............................................................................. 12.0
Winter Design Wet-Bulb ............................................................................. 12.0
Atmospheric Clearness Number ................................................................. 1.00
Average Ground Reflectance ..................................................................... 0.20
Soil Conductivity ....................................................................................... 0.800
Deg.
Deg.
ft
°F
°F
°F
°F
°F
BTU/(hr-ft-°F)
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
5
Rev : 03 Date:2019-05-04
Page 6 of 17
HEATING, COOLING AND VENTILATION SYSTEM
Heating, cooling and ventilating systems are used to provide proper environment for human
activities &equipment safety in the occupied spaces. HVAC system in buildings containing
equipment required for operation of the process units ought to be capable of maintaining the
specified environmental levels with specified shutdown and reliability requirements. Important
factors in design and selection of air conditioning equipment are as follows:



Temperature and humidity control
Air change, exhaust and supply of fresh air
Air quality control
In this report, firstly, different air conditioning systems are described and comparisons are
made for their use and then the technically and economically proper system is proposed.
Should be considered 10 percent safety factor for heating and cooling load data.
All plant’s buildings are listed as follows:
1) MCC Room
2) General Work Shop
3) Pipeline Maintenance Workshop
4) Office Building
5) Motor Pool
6) Ware House
7) Canteen
8) Compressor Room
9) HVAC Building
10) Shower & Locker
11) Preparation Building of Lime
12) Floatation Planet
13) Security Guard House
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Contract No. : 20975613
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 7 of 17
Indoor Design Conditions
Indoor Design Condition
No
Space
Winter
Temp.
C
Summer
Temp.
C
Relative
Humidit
y
System
type
Cooling
Heating
Min. Fresh
Air
Min.
Ventilati
on
Pressuriz
ation
Equipment
1
MCC Room
72
352
NC
HAC
Yes
Yes
(Note1)
-
Positive
(Note1)
Package Unit or
Duct Split unit
1-1
Control Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
(Note1)
Package Unit or
Split unit
Negative
Exhaust Fan &
Radiator
2
General Work
Shop
2-1
WC
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2
2-2
Mechanical
Equipment
Maintenance
52
NC
NC
HV
No
Yes
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
2-3
Rest Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-4
Welding Room
NC
NC
NC
No
No
No
-
15 ACH
Negative
Exhaust Fan
2-5
Tools Storage
52
NC
NC
HV
No
Yes
-
6 ACH
Negative
Unit Heater &
Exhaust Fan
2-6
Technician
Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-7
Supervisors
Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-8
Documents
Storage
NC
NC
NC
V
No
No
-
6 ACH
Negative
Exhaust Fan
2-9
Storage
52
NC
NC
HV
No
Yes
-
6 ACH
Negative
Unit Heater &
Exhaust Fan
2-10
Lobby
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-11
Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-12
Pantry
NC
NC
NC
V
No
No
-
100 Cfm
per Unit
Negative
Exhaust Fan
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Contract No. : 20975613
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 8 of 17
2-13
Shift Staff
Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-14
Tools Storage
&Accessories
52
NC
NC
HV
No
Yes
-
6 ACH
Negative
Unit Heater &
Exhaust Fan
Negative
Exhaust Fan&
Radiator
2-15
WC
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2)
2-16
Expert Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-17
Workers Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
2-18
Filter Press lab
52
NC
NC
HV
No
No
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
2-19
Metallurgical
lab
52
NC
NC
HV
No
No
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
Negative
Exhaust Fan&
Radiator
3
Pipeline
Maintenance
Workshop
3-1
WC
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2)
3-2
Pantry
NC
NC
NC
V
No
No
-
100 Cfm
per Unit
Negative
Exhaust Fan
3-3
Storage
52
NC
NC
HV
No
Yes
-
6 ACH
Negative
Unit Heater &
Exhaust Fan
3-4
Workers Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
3-5
Supervisors
Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
3-6
Expert Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
3-7
Pipeline
Maintenance
Workshop
52
NC
NC
HV
No
No
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
4
Office Building
4-1
Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil &
AHU
4-2
Library
222
242
NC
HAC
Yes
No
15cfm/person
-
Positive
Fan Coil &
AHU
-
100 Cfm
per Unit
or 15
ACH
(Note2)
Negative
Exhaust Fan&
Radiator
4-3
WC
202
NC
NC
HV
No
Yes
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Contract No. : 20975613
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 9 of 17
4-4
Pantry
NC
NC
NC
V
No
No
-
100 Cfm
per Unit
Negative
Exhaust Fan
4-5
Prayer Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil &
AHU
4-6
HVAC Room
NC
NC
NC
V
No
No
-
6 ACH
Negative
Exhaust Fan
5
Motor Pool
Negative
Exhaust Fan&
Radiator
Negative
Exhaust Fan
100 Cfm
per Unit
or 15
ACH
(Note2)
100 Cfm
per Unit
5-1
WC
202
NC
NC
HV
No
Yes
-
5-2
Pantry
NC
NC
NC
V
No
No
-
5-3
Prayer Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
5-4
Office
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
5-5
Drivers Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
5-6
Operator Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil
6
Ware house
(Note1)
52
NC
NC
HV
No
Yes
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
7
Canteen
Negative
Exhaust Fan&
Radiator
7-1
WC
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2)
7-2
Restaurant
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Fan Coil &
AHU
7-3
Cocking
Room
NC
NC
NC
V
No
No
-
15 ACH
Negative
Exhaust Fan
7-4
Preparation
NC
NC
NC
HAC
No
No
-
10 ACH
Negative
Exhaust Fan
7-5
Dry Storage
NC
NC
NC
V
No
No
-
10 ACH
Negative
Exhaust Fan
7-6
Washing Area
NC
NC
NC
V
No
No
-
15 ACH
Negative
Exhaust Fan
7-7
Laundry
NC
NC
NC
V
No
No
-
10 ACH
Negative
Exhaust Fan
202
NC
NC
V
No
Yes
-
12 ACH
Negative
Exhaust Fan
NC
242
NC
VAC
Yes
No
-
10 ACH
Negative
Split Unit &
Exhaust Fan
7-8
7-9
Shower &
Lockers
Garbage Cold
Room
8
Compressor Room
52
NC
NC
V
No
No
-
15 ACH
Negative
Exhaust Fan
9
HVAC Building
NC
NC
NC
V
No
No
-
6 ACH
Negative
Exhaust Fan
10
Shower & Locker
202
NC
NC
HV
No
Yes
-
12 ACH
Negative
Radiator
10-1
Shower
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Contract No. : 20975613
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
10-2
10-3
Locker
202
WC
NC
NC
HV
Page 10 of 17
No
Yes
-
6 ACH
Negative
Radiator
Negative
Exhaust Fan&
Radiator
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2)
11
Preparation
Building of Lime
52
NC
NC
HV
No
Yes
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
12
Flotation Plant
52
NC
NC
HV
No
Yes
-
10 ACH
Negative
Unit Heater &
Exhaust Fan
13
Security Guard
House
Negative
Exhaust Fan&
Radiator
13-1
WC
202
NC
NC
HV
No
Yes
-
100 Cfm
per Unit
or 15
ACH
(Note2)
13-2
Rest Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
13-3
Gate Control
Room
222
242
NC
HAC
Yes
Yes
15cfm/person
-
Positive
Note1: This item shall be finalized by vendor of MCC electrical panel and vendor of control
room equipment.
Note2: 100 cfm per unit or 15 ACH each is more.
Legend:
HVAC: Heating, Ventilation and Air conditioning
HAC: Heating and Air conditioning
VAC: Ventilation and Air conditioning
HV: Heating and Ventilation
V: Ventilation
NC: Not Controlled
ACH: Air Changes per Hour
6
Heat Gains
Heat Gains from Lighting
 Is based on ASRAE 90.1, Table 9.5.1
Heat Gains from Computer
 All rooms: 250 W/computer
Split unit and
Electrical
Heater or Fan
Coil
Split unit and
Electrical
Heater or Fan
Coil
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
Rev : 03 Date:2019-05-04
Page 11 of 17
Heat Gains from Pantry Equipment
 Sensible heat: 3500 W
 Latent heat: 3000 W
7
Noise levels
The noise levels generated and transmitted by HVAC equipment running at the same time shall
not exceed the following limits:







8
Mechanical rooms: 85 dB (A)
Equipment rooms without occupancy: 60 dB (A)
Equipment rooms with occupancy: 50 dB (A)
Laboratory: 50 dB (A)
Offices/meeting rooms: 45 dB (A)
Workshops: 60 dB (A)
Toilets: 55 dB (A)
Ductwork and Fans calculation
Calculation shall be prepared using established design methods as given in ASHRAE
Handbook Fundamentals or similar approved methods.
Maximum allowable air velocity in ducts shall be:
 Ducting in manned areas: 1200 fpm (in branches) - 1600 fpm (in main
runs)
 Ducting in unmanned areas: 2000 fpm
 Exhaust ducting: 700 fpm (in branches) – 1000 fpm (in main runs)
 Supply grilles in manned areas: 400 fpm
 Supply grilles in unmanned areas: 800 fpm
 Return grilles: 500 fpm
The treated air is conveyed into the conditioned space through ducts made of galvanized
steel and constructed according to HVAC technical specification and as per SMACNA.
Rectangular ductwork with maximum 3:1 aspect ratio, and 1-inch in 4-inch slope of
transformation will be used.
The ductwork will be run inside false ceiling and laid on supports attached to structure of
building.
Supports will be protected against corrosive substance and coated by fire resistance
materials. Air will be distributed in the rooms by means of registers and diffusers with
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 12 of 17
adjustable dampers. Manual volume control dampers shall be installed in main branches.
Ducting insulation, wherever necessary, will be done.
8.1
Duct insulation
For air ducts, Glass fibre insulation is used, outdoor Ductwork will be fabricated from
galvanized sheet metal and the gauges of metal will be in accordance with the
recommendation of SMACNA HVAC duct construction standards
9
FIRE DAMPER
The motorized fire damper is required in MCC and control room on supply air duct in change
space area.
10
EMERGENCY POWER
Emergency power is needed for the following items:
1- HVAC Equipment of Control room
2- Exhaust of Battery Room
11
SAFETY FACTOR
In heating and cooling calculation should be considered the following safety factor.

Sensible cooling

15%

Latent cooling

10%

Heating

10%
12
OVERCAPACITY
For cooling equipment should be considered 10% over capacity in Control and MCC room.
13
STANDBY SYSTEM
For Control and MCC room should be considered 100% standby equipment. This item
shall be finalized by vendor of MCC electrical panel and vendor of control room equipment.
14
PIPING AND PLUMBING SYSTEM SELECTION/DESIGN
14.1
Design principles
The aim of plumbing system design for each Sub Area should be to safely and reliably
provide domestic hot and cold water, and to remove sanitary wastes and rain water.
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
Page 13 of 17
The plumbing facilities required for each building should be distinguished by the architect,
owner working. In the absence of complete or adequate architectural plans, the requirements
for various facilities should be determined by the plumbing designer and according to
plumbing codes and standards.
Plumbing systems should be designed using materials that are durable and maintenance-free
to the possible extent.
All materials should be of current standard manufacture, new, undamaged in any way and
should bear the manufacturers name and grade marks.
Adequate and accessible space should be maintained for pipe clearance requirements for ease
of service and maintenance of relevant equipment as recommended by the manufacturer as
per requirement.
Gate valves and unions of flanges should be suitably located to isolate each unit, main circuit
sand section of piping to facilitate maintenance and or removal of all equipment.
Drain valves should be supplied at all low point of each system to enable complete drainage.
All plumbing fixtures must be made of smooth, non-absorbent, corrosion-resistant material
and should be installed so that maintenance and cleaning are readily accomplished.
Each fixture directly connected to the drainage system must be equipped with a water seal
trap.
The drainage system should be designed with proper venting to protect all fixture water seals
from siphonage and blowout under ordinary conditions of use.
Pipe sizes and flow rates should be established from estimates of simultaneous demand.
All pipework should be constructed, installed and supported so that it is free from excessive
stressing due to weight from its contents plus its own dead weight, dynamic forces due to
fluid movement and expansion and contraction due to change in temperatures.
Unless otherwise indicated, pipes, coils, etc. should be sloped in the direction of flow so that
no liquid will be retained in the pipes.
Plumbing calculation should be based on plumbing codes recommendations.
Fixture unit for domestic water and waste water consider in the table:
Equipment
Western Private toilets with flash tanks
Private Washstand
Private Kitchen Sink
Private Shower
Toilet Mixing Valve
Eastern Private toilets with flash tanks
¾” Valve
FU for Cold Water
2.2
0.5
1
1
0.5
3
5
FU for Hot Water
0
0.5
1
1
0.5
0
0
Total FU
2.2
0.7
1.4
1.4
0.7
3
5
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
14.2
Page 14 of 17
Equipment
DFU
Western Private toilets with flash tanks
Private Washstand
Private Kitchen Sink
Private Shower
Eastern Private toilets with flash tanks
¾” Valve
2” Floor Drain
4
1
2
2
4
3
2
Selection Principles
Domestic cold water pipework
Furnish all piping, valves, fittings, etc.:
The domestic cold water service should supply all demands for drinking, washing and
HVAC system requirements.
Domestic cold water piping for pipe sizes above 63mm shall be galvanized steel schedule 40
according to ASTM A120 or equivalent standard. All connections to sanitary premises and
all sizes 63mm and below shall be PEX-AL-PEX or PPR pipes. All above ground pipe shall
be galvanized steel.
Maximum allowable pressure drop in pipe shall be 3 Psi per 100 ft of pipe.
Domestic hot water pipework
Furnish all piping, valves, fittings, etc.:
Domestic hot water piping for pipe sizes above 63mm shall be galvanized steel schedule 40
according to ASTM A120 or equivalent standard. All connections to sanitary premises and
all sizes 63mm and below shall be PEX-AL-PEX or PPR pipes. All above ground pipe shall
be galvanized steel.
Maximum allowable pressure drop in pipe shall be 3 Psi per 100 ft of pipe.
Chilled and hot water pipework
Chilled and hot water piping should be of standard weight carbon steel schedule 40 according
to ASTM A53 or equivalent standard.
All refrigerant pipes are copper pipes seamless, standard size according to ASTM B42-02.e1
Maximum allowable pressure drop in pipe shall be 2.5 ft per 100 ft of pipe.
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
Rev : 03 Date:2019-05-04
Page 15 of 17
Sewage water and vent pipework
Furnish all piping, fittings, clean-outs, floor drains, etc. required for:
All drain and vent piping from plumbing fixtures.
Floor and equipment drains and drainage.
All sewage Waste and vent pipes shall be Polyethylene pipe PE80, PN6 according to
EN12201-2 and DIN 8074.
Waste and soil branches to the main runs should only enter the side of the main direction of
flow at an angle of 45o.
Clean-outs should be provided at the bottom of all vertical stacks of each store level and the
head of all horizontal runs and changes of direction in the main.
Vent pipes should be carried to atmosphere full bore terminating 1500 mm above roof level
not within a horizontal distance of three meters or less than 2000mm above the head of any
open able window. The pipe should be provided with a vent cowl.
14.3
Pipe insulation
Pipework should be insulated where necessary to prevent condensation and unnecessary heat
exchange.
Insulated piping should be provided with saddles at hanger points and hardwood plugs or
blocks at hanged points to prevent compression of insulation.
All insulating materials used should:





be non-combustible
not emit toxic fumes or smoke when heated
be inorganic and non-hygroscopic
be chloride free
be asbestos free
Vapour barriers should form a complete seal to prevent condensation occurring on the
exterior surface of the pipe.
All penetrations through the vapour barrier should be sealed by wrapping with aluminium
tape.
Pipe works should be insulated with glass fiber in thickness according to pipe sizes listed
below:
All exposed insulated pipe works should be covered with aluminium jacket as a vapour
barrier.
Insulation pipework thickness shall be follows:
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Document Title : HVAC DESIGN CRITERIA
PIPE SIZE
(INCH)
1/2"
3/4"
1"
1 1/4"
1 1/2"
2"
2 1/2"
3"
Rev : 03 Date:2019-05-04
Page 16 of 17
MINIMUM INSULATION THICKNESS (mm) for k=0.034 W/m.K
Heating System with Hot Water
Heating System with Steam
Cooling System
38
38
13
38
38
13
38
38
13
38
38
20
38
38
20
38
38
20
50
50
25
50
50
25
Note: According to National Building Regulations No.14
14.4
Supports
Supports are an essential part of the pipework system, and their supply and installation are
normally the responsibility of the pipework contractor.
All equipment and pipework supports should be purposed made being of welded or bolted
construction. The locations should be to suit structural work, equipment, etc.
The choice between the available methods of fixing will depend on the type of building
structure and any limitations imposed by the structural design.
The load to be carried should be understood to be limited to the pipework and its associated
insulation.
15
ELECTRICAL MOTORS AND PANELS
For panel and motor requirements refer to relevant electrical specification and motor data
sheets.
16
Soft Ware
The following software’s will be used for HVAC design
1. CARRIER HAP 4.9 for calculation
2. AUTOCAD for drawing
National Iranian Copper Industries
Company
MOBINA Engineering Co.
DAREZAR CONCENTRATOR PROJECT
(FLOTATION PLANT)
Contract No. : 20975613
Document No. : 25C3-R-H09-00-0000-00-001-03-D
Rev : 03 Date:2019-05-04
Document Title : HVAC DESIGN CRITERIA
17
Page 17 of 17
Standard
1- ASHRAE, American Society of Heating, Refrigerating and Air-Conditioning Engineers
o
o
2007 AHRAE 62.1, Ventilation for Acceptable Indoor Air Quality
2007 AHRAE 90.1, Energy Standard for Buildings
2- AWWA M11, A Guide for Design and Installation
3- DIN 2440 / 2444: Black & Galvanized Steel Pipe
4- Iranian National Building Regulations
5- Code 271, Design Condition
18
Seismicity
Refer Iranian Code for Seismic Resistant Design of Buildings Standard No 2800 (Rev.4).