deg是CSS中的一个角度单位，表示度（Degress），一个圆共360度。在CSS中角度单位有：度（deg）、梯度（grad）、弧度（rad）。无论如何声明，这些值都会解释为0~360范围内的度数，如：-90deg=270deg。各角度值之间的转换：90deg = 100grad = 0.25turn ≈ 1.570796326794897rad ...
a cascade high-temperature heat pump system with a heat production of 20 kW was built. Experiments showed that when the temperature rose to 98~101 °C, the average COP of the system was 2.1 [17,18]. Generally, the heating temperature of the CO2heat pump is 80–100 °C, and its perfo...
Future thermal energy conversion systems such as concentrating solar power (CSP) [1,2] and thermal energy storage (TES) based on molten salts as exemplary thermal energy generation and storage technologies and downstream Clausius-Rankine steam processes exemplary for electricity generation in solar therm...
Problem2-1.In a Rankine cycle with one stage of reheat, steam enters the turbine at130lbfin2 and950°Fand condenses at100°F.The cycle produces1.7(10)9Btuhrand has one stage of reheat, optimally placed, back to950°F...
There is no pressure loss in boiler and condenser. Determine A-)The net power output B-)The heat input throught the boiler C-)Thermal efficiency of the cycle D-)Exergy destruction rate if the dead state temperature is25°C The...