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  1. edi454

    Domestic Hot Water Secondary Circulation

    Thanks for all the links, but what I am looking at is a domestic hot water system. Where hot water is stored in a cylinder. The flow pipe from the cylinder would go to a tap. Due to the length of the pipe from the cylinder to the tap, it would be more than likely that a person would have to wait...
  2. edi454

    Domestic Hot Water Secondary Circulation

    Hi, I am a graduate mechanical engineer and would appreciate if someone could offer an explanation on the design of a DHW secondary circulation system. I initially designed my system so that the pump on the return hot water pipe would pump towards the hot water calorifier. I have been told...
  3. edi454

    energy used heating & cooling a volume of air?

    Ok I'm starting to understand. Thank you for the explanation it's clarifies things for me. So as I'm using a building environment simulation software it would be best for the ceiling and floor voids be zoned separate to the occupied zone. I have done two test models and there is a difference of...
  4. edi454

    energy used heating & cooling a volume of air?

    Thank you for the replies, yes I figured that if I looked only at the room volume and for example had a VRF Fancoil dealing with a room heat gain load and only recirculating the room air to cool (ignoring all other energy paths i.e. solar, conduction and convection through building material...
  5. edi454

    energy used heating & cooling a volume of air?

    Hi all, this is my first post on the forum. I am a junior mechanical engineer and would appreciate if someone could clarify a problem I'm trying to logically think out. I am currently using a building energy simulation software Virtual Environment from IES Ltd to run compliance check for CO2...

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