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Description	Unlike conventional HVAC systems, sorption cooling systems do not require an external cooling source for cooling and dehumidification of the air. Conventional HVAC systems are systems that supply mechanical energy (compression cooling) whereas sorption cooling machines use heat as energy source. The efficiency of both systems is comparable. Traditionally, the technology is used in the process industry (e.g. in breweries or for food production) to ensure the refrigeration supply in the production. Five main components are necessary to run a sorption cooling system. Condensor, evaporator, expeller (also named reactor or generator), absorber and pump. Depending on the mode of binding the water vapor – there is a distinction between absorption (continuous cooling is possible) and adsorption (nearly continuous cooling possible). In both cases the air is dehumidified and cooled by the release of latent heat. The technology is available with solid (adsorption cooling) and fluid (absorption cooling) absorbers. Both are hygroscopic materials. The water vapor contained in the air is removed from the air stream due to the difference in the partial pressure. In parallel the temperature of the air and thereby the room temperature is reduced.
Advantages	High efficiency More eco-friendly than conventional HVAC systems Low investment and operating costs Sorption cooling systems with fluid absorbers: Sorption and generation can be separated, due to the separate storage of the two fluid materials Energy for regeneration could be provided by solar energy
Disadvantages	Adjustment necessary for certain buildings, climatic conditions and occupancy
Characteristic features	Needs to be adjusted to suit frame conditions
Application barriers	No sorption coolers known that are used for any building facilities
Information sources	http://planck.caltech.edu/coolers.html http://ecn.nl/nl/nieuws/newsletter-en/archive-2008/march-2008/topmacs/
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Trade:	Building services

Parameter	Minimal Value	Maximal Value	Unit
Nominal Power Input	0,05	2	kW
EER	N/A	N/A
Water Flow Rate	3	80	l/h
Air Flow Rate	600	15000	m3/h
Sound Power Level			dBA
Sound Pressure Level			dBA
Operating Temperature Range	25	N/A	°C
Dimensions			mm
Weight			kg
Cooling Capacity	1	100	kW
COP	N/A	N/A
COP Annual Degradation Rate	N/A	N/A	%
Investment Cost	3500	200000	€
Operational Cost	50	2000	€/year
Replacement Cost	100	1000	€/year
Life Expectancy	10	>25">25" cannot be used as a page name in this wiki.	years

Deterioration	Description
Causes
Parameter
Degradation Rate
Measurement

The Design4Energy project aims to address evolutionary life-cycle evolutionary design methodology able to create energy-efficient buildings flexibly connected with the neighbourhood energy system.

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