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Consider the following statements : In ammonia refrigeration systems, oil separator is provided because 1. oil separation in evaporator would lead to reduction in heat transfer coefficient. 2. oil accumulation in the evaporator causes choking of evaporator. 3. oil is partially miscible in the refrigerant. 4. oil causes choking of expansion device. Of these statements : (a) 1 and 2 are correct (b) 2 and 4 are correct (c) 2, 3 and 4 are correct (d) 1, 3 and 4 are correct |
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Answer» (d) 1, 3 and 4 are correct |
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