refroidissement solaire

Traductions

• anglais

  Date : 1984

  Définition

  The application of energy from the sun to effect cooling. The simplest form of so-called solar cooling does not deserve the name since it involves no more than allowing large ponds of water to cool at night (by evaporation and radiation to a clear sky); the chilled water is covered during the day and used to keep a house cool.
  
  Use of solar radiation to produce cooling by means of thermal processes.

  Note :

  True solar cooling involves the use of solar collectors to produce heat which is then used to drive a heat-actuated heat pump. A heat store may be used to enable the heat pump to run when the sun is not shining; alternatively, cold water can be stored and circulated as required. Solar cooling installations have the advantage that the energy is usually most abundant when it is most needed. Combined solar heating/cooling installations are under intensive development in the Unites States. Typically, solar cooling systems can be driven by flat-plate collectors operating at temperatures below 100°C, feeding hot water to an absorption cycle heat pump. (Other heat pump types can be used, namely those based on the Rankine cycle or desiccant systems). Absorption cycle heat pumps based on the lithium bromide/water cycle and on the water/ammonia cycle have been successfully employed for solar cooling in the US and Australia. Other chemical pairs are being considered for this purpose, particularly where storage is envisaged in conjunction with the absorption cycle.

  Terme :

  1. solar cooling

  Terme associé :

  1. solar refrigeration