We can extend our notation to the case of two parameters n and m that can go to infinity independently at different rates. For a given function g. n; m/, we denote by O. g.n; m// the set of functions O. g.n; m// D ff .n; m/ W there exist positive constants c, n0, and m0 such that 0 f .n; m/ cg. n; m/ for all n n0 or m m0g : Give corresponding definitions for .g. n; m// and ‚.g. n; m//.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.