Aheat pump, using ammonia as the refrigerant, has the following conditions , heat effect 75,000kj/sec , evaporator pressure 0.22mpa , condenser pressure 1.20mpa , refrigerant enters compressor as saturated vapor and leaves the condenser as saturated liquid. find the coefficient of performance

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information