A household disposes of 300 kg of domestic waste a year, 90% of which is carbohydrates and 10% of which is inert, in an anaerobic digester. The family uses methane for cooking on an open fire. Estimate the number of litres of water that could be boiled annually.

*Speficic heat of water: 4.2 kJ kg-1C-1

*Assume that efficiency of heat conversion to water from the biogas to be 38% and that the starting temperature of the water is 40 degrees Celclius. The latent heat of vaporization of water is 2,260 kJ/kg.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?