For the reasons of nature conservation great attention is paid at the systems that use low-grade heat sources in their work (that is heat energy of soils, air, discharge and drain).
原因自然保护的关注在系统使用低品位热源的工作(热能的土壤、空气、放电和排水)。
2
In reversible process, there is the entranspy conservation, that is, no loss of capability of heat transport.
在可逆过程中，火积是守恒的，不发生热量传递能力的耗散。
3
A finite volume method was utilized to perform a discrete solution for the equations of mass, chemical components, momentum and heat energy conservation.