Heat Load Calculations
Budget: £20 – £250 GBP
I require a heat load calculation (heat loss and heat gain) for the attached drawings.
Notes from the spec:
- No allowance shall be made for the heat gain from lighting, occupants and equipment within the heating load calculations.
- No allowance shall be made for internal blinds within the cooling load calculations.
- The air infiltration rate used in the heat loss and heat gain calculations shall be based on the entire building volume, i.e. to include raised floor and suspended ceiling voids.
- The heat gain and heat loss calculations shall be completed using CIBSE AM11 software based on design criteria.
Design Cooling Loads:
- Office occupancy level: 1 person per 8m2 net office area.
- Small power: 25W/m2 for office area terminal units.
- Small power: 10W/m2 additional in cooling plant and risers.
- Lighting: 10W/m2 office areas
- Occupants: Sensible 90W per person.
- Occupants: Latent 50W per person.
- Infiltration: Summer 0.50 air changes per hour.
- Infiltration: Winter 1.0 air changes per hour.
- Infiltration: Reception 2.0 air changes per hour.
Fresh Air Rates:
- Office occupancy level: 1 person per 8m2 net office area
- Office fresh air supply rate: 1.5 litres/s per m2 + 10% for central plant
- Toilet, Shower & Cleaner: 10 air changes per hour supply and extract or 25l/s per cubicle, whichever is greater.
- Changing Room: 15 air changes per hour supply and extract.
- Drying Room: 20 air changes per hour supply and extract.
Link to building overhead view: https://tinyurl.com/edz4922m
Please note: any disclosure, reproduction, copying, distribution or other dissemination or use of documents shared with this job is strictly prohibited.
Notes from the spec:
- No allowance shall be made for the heat gain from lighting, occupants and equipment within the heating load calculations.
- No allowance shall be made for internal blinds within the cooling load calculations.
- The air infiltration rate used in the heat loss and heat gain calculations shall be based on the entire building volume, i.e. to include raised floor and suspended ceiling voids.
- The heat gain and heat loss calculations shall be completed using CIBSE AM11 software based on design criteria.
Design Cooling Loads:
- Office occupancy level: 1 person per 8m2 net office area.
- Small power: 25W/m2 for office area terminal units.
- Small power: 10W/m2 additional in cooling plant and risers.
- Lighting: 10W/m2 office areas
- Occupants: Sensible 90W per person.
- Occupants: Latent 50W per person.
- Infiltration: Summer 0.50 air changes per hour.
- Infiltration: Winter 1.0 air changes per hour.
- Infiltration: Reception 2.0 air changes per hour.
Fresh Air Rates:
- Office occupancy level: 1 person per 8m2 net office area
- Office fresh air supply rate: 1.5 litres/s per m2 + 10% for central plant
- Toilet, Shower & Cleaner: 10 air changes per hour supply and extract or 25l/s per cubicle, whichever is greater.
- Changing Room: 15 air changes per hour supply and extract.
- Drying Room: 20 air changes per hour supply and extract.
Link to building overhead view: https://tinyurl.com/edz4922m
Please note: any disclosure, reproduction, copying, distribution or other dissemination or use of documents shared with this job is strictly prohibited.