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PROJECT: BPTP TERRA HOUSING AT SECTOR-37D,GURGAON

Concept Design Report-MVAC

Sr. No. Description of AreasAmbient Condition As per

ISHRAE/NBCInside Condition Fresh Air per person (CFM) Density (Nos.)

Light Load

(Watt)Equipment Load (Watt)

1 Master Bed Room 2.00 100.00 100.00

2 Bed Room 2.0 100.00 100.00

4 Living & Dining23+/-1 Deg. C DB & RH 60

% Maximum

5x Density+ 0.06 x AC Area12 (This will depend on

Type of Apartment)

200 ** 300.00

5 Kitchen NON AC

6 Lift Lobby NON AC

7 Entrance at G.F.23+/-1 Deg. C DB & RH 60

% Maximum

Notes

(2 no./Bed room + 4 Guest)

2 BHK 8

3 BHK 10

4 BHK 12

**

MVAC DESIGN PARAMETERS

Summer-43.3

Deg.C

DB&23.9

Deg.C

WB

andMonsoon-35Deg

.CDB&28.3

Deg.C

WB(NewDelhiregion)

23+/-1 Deg.C DB & RH 60

% Maximum5x Density+ 0.06 x AC Area

Occupancy in Living & Dining areas

If the area is greater than 500 sq.ft.. Then Lighting Load : 300 Wattin place of 200 W

Reality : INFILTRATION

HVAC Consultants- Dew Point Consultants Pvt Ltd

An ISO 9001:2008 certified company

Page No.8 Version-1-(18-01-14)

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Light Load




A Basis of Design;

A.1

A.2

A.3

A.3.1 Glass: 1.0 BTU/hr.sqft.F ( SHGC - 0.56) ( Single glass with inside blind)

A.3.2 Wall : 0.34 BTU/hr.sqft.F ( BRICK block)

A.3.3 Exposed roof : 0.32 BTU/hr.sqft.F ( RCC roof with brick bat coba)

B

B.1 Floor or ceiling load shall be considered for intermediate floor.

B.2 Roof load and floor load shall be considered for top floor.

B.3 No partition load shall be considered for adjasent room ( assumed AC space ).

The Minimum Ventilation Rate in the Breathing Zone from ASHRAE Standard 62.1.2004

Assumption for cooling load estimation

U-value of building Skin (Client to take a call on MoEF compliance)

The Ambient condition data from the Weather Data & Designed conditions by ISHRAE & ASHRAE.




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C

C.1 Conventional Split AC system

C.1.1 ADP Selected is 52F

C.1.2 Bypass factor considered is .15

C.1.3 Indoor quantity fixed.

C.1.4 De-ration of the out door unit has to be considered for 43.3 Deg C out door conditions.

C.1.5 Selection criteria:

Indoor unit: Match the de-humidified air quantity as mentioned in the design data summary.

If the same cannot be matched, then strike an equilibrium between the refrigeration demand and dehumidified air quantity.

Out-door unit After de-ration (@ 8-10%) , the capacity of out-door unit shall not be less than the peak refrigeration demand of flat.

Following conditions apply to the selection of indoor and out door capacity.




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If false ceiling is not to be provided, then a chase in the wall / cornice shall be provided.

D Proposed HVAC Equipments and requirements :

D.1

D.2

D.3

D.4

D.5

D.7

D.9

Multi layer composite pipe ( 20 mm dia ) shall be used for condensate drain. Pipe shall run in floor finish from indoor to nearest floor trap. Termination of drain pipe in floor trap shall be provided by

plumbing consultant

1 phase Electrical power at indoor unit shall be provided by Electrical consultant in case of conventional split AC system.

No extra unit shall be provided for dresser. Dresser shall be cooled through infiltration. In case of closed dresser, separate hi-wall indoor unit shall be provided ( client to take decision )

80-100 mm dia Sleeves in beam shall be provided in beam for ref. piping wherever required ( by civil contractor)

Ref. piping and cabling shall run in cornice from outdoor unit to each indoor unit ( cornice shall be provided by architect )

Wall construction (RCC or clay bricks). If RCC, then refrigerant piping issues to be deliberated in length.

Hi-wall type indoor unit shall be provided for each room of flat

Toilet ventilation for flats are not in our scope of work.

IMPORTANTNOTES/

CONSIDER

ATIONS/INITIAL

DE

CISIONS

Refrigerant piping , ODU and selection issues:

Architects and Client team to decide on whether false ceiling is to be provided or not.

Location of out door units to be frozen early in the project. Access and maintainability not to be ignored.




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Reality : INFILTRATIOND.10

D.11

D.12

D.13

E Basement Ventilation System

E.1

E.2

E.3

E.4

E.5 Each basement will have a dedicated shaft for extract air.

E.6

Kitchen ventilation are not in our scope of work.

All civil work shall be done by civil contractor.

No stairwell is pressurised. Openings at each midlanding will be provided as per NBC of India by architect. I

No liftlobby is pressurised. It will be ensured by architect that the said space will qualify as naturally ventilated.

All Basement Shall have ventilation system as per NBC, in terms of ventilation rates 10 air changes normal, 30 air changes in fire.

Fire zoning for car parking areas shall be done 1500 - 1650 sqm area.

Tube axial fan with duct silencer shall be provided for normal ventilation ( 10 ACPH ) and Axial fan with silencer for balance 20 ACPH. This assumes that the normal extract fans will also run in a firesituation.

Ducted system shall be provided only for 10 ACPH.

All services room will have dedicated ventilation system




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