Dedicated Heat Recovery Chiller System
UNIVERSITÉ SAINT-JOSEPH Faculté d'ingénierie E.S.I.B. Cursus Génie Electrique et Mécanique Semestre 2
Dedicated Heat Recovery Chiller
Mai 2011
Responsable: Mr. Said CHEHAB
Binȏme: Bassam RASHED Elie HAJJ MOUSSA
Introduction
Over the past few years, Air Conditioning witnessed immense new changes that are changing the way we see ACs from an addition to necessary. The new trend in construction is green. Greener buildings greener technologies, everything tends to lower the carbon foot print of a building/complex. Mechanical equipments are no different especially since they represent more than 50% of the electrical consumption of a project (residential buildings, Villas, Hotels, Schools etc…) Over the course of this subject we learned the importance of water and air chillers – compared to normal split units – as they tend to give better return on investment as the project grows older and larger. Nevertheless, having numerous AHUs and FCUs in one complex only meant high energy bills, which brought the necessity to join different systems in one. This brings us to the topic of new type of chillers, the dedicated heat recovery chiller (DHRC). Resort/convention hotels, hospitals and nursing homes as well as athletic facilities located in warm climates, demand heat and cool at the same time. Unlike old systems where boilers used to work in parallel to the chiller system to respond to the demand for hot water, DHCR systems include a heat exchanger with allows to heat the water exiting it to the designated water temperature to perform various tasks like: Reheat coils Building heating (low temperature < 130° F) Domestic water heating (washing and showers) Swimming pool heating Laundry water heating Snow melting Process heating Kitchen water for dish washing and clean up
There is only one primary reason to install a Dedicated Heat Recovery Chiller. It is to reduce emission of carbon dioxide released to the atmosphere by the burning of fossil fuel, and to save on
Dedicated Heat Recovery Chiller
Mai 2011
Responsable: Mr. Said CHEHAB
Binȏme: Bassam RASHED Elie HAJJ MOUSSA
Introduction
Over the past few years, Air Conditioning witnessed immense new changes that are changing the way we see ACs from an addition to necessary. The new trend in construction is green. Greener buildings greener technologies, everything tends to lower the carbon foot print of a building/complex. Mechanical equipments are no different especially since they represent more than 50% of the electrical consumption of a project (residential buildings, Villas, Hotels, Schools etc…) Over the course of this subject we learned the importance of water and air chillers – compared to normal split units – as they tend to give better return on investment as the project grows older and larger. Nevertheless, having numerous AHUs and FCUs in one complex only meant high energy bills, which brought the necessity to join different systems in one. This brings us to the topic of new type of chillers, the dedicated heat recovery chiller (DHRC). Resort/convention hotels, hospitals and nursing homes as well as athletic facilities located in warm climates, demand heat and cool at the same time. Unlike old systems where boilers used to work in parallel to the chiller system to respond to the demand for hot water, DHCR systems include a heat exchanger with allows to heat the water exiting it to the designated water temperature to perform various tasks like: Reheat coils Building heating (low temperature < 130° F) Domestic water heating (washing and showers) Swimming pool heating Laundry water heating Snow melting Process heating Kitchen water for dish washing and clean up
There is only one primary reason to install a Dedicated Heat Recovery Chiller. It is to reduce emission of carbon dioxide released to the atmosphere by the burning of fossil fuel, and to save on