The reliance on coal-fired power generation has gradually reduced with the growing interest in environment and safety, environmental effects of are now being considered. However, it can be difficult to provide stable end-users while minimizing pollution by replacing systems combined cooling, heat, (CCHP) that use natural gas, because CCHP have various output vulnerabilities. Therefore, purchasi...

gas turbines play an important role in supplying power for the country especially in peak electricity load. the main disadvantages are the turbines, they produce large changes are a result of climate change. however, in times of peak electricity grid and at the same time warm months, can produce gas turbines under the effect of ambient temperature, the amount of reduced considerably. the method...

in some climates, massive buildings made of stone, masonry, concrete, earth and … can be utilized as one of the simplest and most effective ways of reducing building heating and cooling loads. very often such savings could be achieved in the design stage of the building and with a relatively low-cost. such declines in building envelope heat losses combined with optimized material configuration ...

Polygeneration of hydrogen, heat, and power has been shown to improve overall plant efficiency by creating more products and introducing synergy which improve fuel cell performance (Figure 1). The integration of an absorption chiller with a high temperature fuel cell for polygeneration of combined cooling, heating, hydrogen, and power is studied. Steady-state and dynamic computer models are uti...

Abstract Waste energy recovery is crucial for reducing greenhouse gas emissions and alleviating the increasing demand central power grids. In paper, theoretical analyses have been carried out on a novel thermoacoustic combined cooling, heating, system simultaneously recovering waste heat liquefied natural cold energy. The designed based acoustic impedance matching between alternator units maxim...

This paper provides the first estimates of end-use specific emissions factors, which are estimates of the amount of a pollutant that is emitted when a unit of electricity is generated to meet demand from a specific end-use. In particular, this paper provides estimates of emissions factors for space cooling and heating, which are two of the most significant end-uses. The analysis is based on a n...

A numerical study on the influence of forward-facing cavity length upon forward-facing cavity and opposing jet combined thermal protection system (TPS) cooling efficiency under hypersonic flow is conducted, by means of which the flow field parameters, heat flux distribution along the outer body surface are obtained. The numerical simulation results are validated by experiments and the cooling e...