1b. a heat storage arrangement is designed to store 4.2 x 10 joules of heat. The material is heated from 25°c to 45°c but melts at 32°c. the specific heat
capacity of solid is 2.0 kgkgk the specific heat of the liquid is 4.0 kgkgk
and its specific latent heat of fusion (mass) is required?​

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)