Air Change Requirement
Air Change Requirement
(OP)
Hello everybody,
At present, I am designing a facility where dead bodies are brought for washing and finally sent to the visiting room where the relatives will have last look at it.
As per Ahsrae, we need to maintain min.10 air change rate (100% fresh air) in this washing area,due to this, huge amount of conditioned air to be supplied and exhausted and eventually, the the chiller capacity is becoming almost double with this ACH as compared to the normal design (by considering load from building envelope and occupants).
By considering 10 ACH: Plant Capacity = 240 Tons
By considering load due to building envelope and occupants: Plant Capacity = 165 Tons.
Can anybody advice me of reducing plant load without compromising air change requirement.
Thanks and regards,
At present, I am designing a facility where dead bodies are brought for washing and finally sent to the visiting room where the relatives will have last look at it.
As per Ahsrae, we need to maintain min.10 air change rate (100% fresh air) in this washing area,due to this, huge amount of conditioned air to be supplied and exhausted and eventually, the the chiller capacity is becoming almost double with this ACH as compared to the normal design (by considering load from building envelope and occupants).
By considering 10 ACH: Plant Capacity = 240 Tons
By considering load due to building envelope and occupants: Plant Capacity = 165 Tons.
Can anybody advice me of reducing plant load without compromising air change requirement.
Thanks and regards,





RE: Air Change Requirement
RE: Air Change Requirement
They have crossflow HX`s with some latent transfer
The way we build has a far greater impact on our comfort, energy consumption and IAQ, than any HVAC system we install
RE: Air Change Requirement
RE: Air Change Requirement
Poor efficiency compared to a wheel, but less moving parts, no cross contamination.
If you build an ERV with a wheel right you can make clean air leak towards the exhaust side.
I am testing out a wheel from roof top systems in my own home down here.
The way we build has a far greater impact on our comfort, energy consumption and IAQ, than any HVAC system we install
RE: Air Change Requirement
Why is is necessary to have 100% OA at times when the space is not being used for it's design purpose?
RE: Air Change Requirement
You can use the heat pipe to recover the heat from the exust air so that you can precool the Fresh air and reduce the load on the chiller.