A biconcave lens perpendicular to the principal axis. A ray labeled A parallels the principal axis. When it intersects with the lens, a ray labeled B bends upward and a ray C continues parallel to the principal axis. Another ray labeled D is angled toward the principal axis. When it intersects with the lens, a ray labeled E continues parallel to the principal axis, and a ray labeled F intersects with the principal axis. Which arrow represents the refracted arrow of incident ray A?

Which arrow represents the refracted arrow of incident ray D?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)