Answered: Saturated vapor is condensed to…

Saturated vapor is condensed to saturated liquid in a condenser. The heat capacity ratio is The effectiveness (e) of the condenser is Cr C₁ = = Cmin Cmax .

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 8RQ: Four methods for controlling head pressure in an air-cooled condenser are ______, ______, _______,...

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Concept explainers

Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.

Question

Saturated vapor is condensed to saturated liquid in a
condenser. The heat capacity ratio is
. The effectiveness (e) of the condenser is
Cr
=
Cmin
Cmax

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The typical difference in temperature between the cooling tower water supplied to the condenser and the out-door wet-bulb temperature is _____F.
Four methods for controlling head pressure in an air-cooled condenser are ______, ______, _______, and
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Please show the coimplete solution. (Example: Conversion of Units) In an ammonia condensing machine (Compressor Plus Condenser) the water used for condensing is 55°F and the evaporator is at 15°F. Calculate the ideal COP.
Fill in the blanks: An ammonia vapor compression system includes a liguid to suction vapor heat exchanger in the system. The heat exchanger warm the saturated vapor coming from the evaporator from -10°C to 5°C with liquid which comes from the condenser at 30°C. Calculate the following a.) mass flow rate of refrigerant if it vaporizes at the rate of 3 Lps from the evaporator, kg/s Qu b.) refrigeration capacity, TOR c.) compressor's work in Hp d.) COP, e) heating capacity of the heat exchanger, kW
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case: Pump work in KW. Ans. Ideal heat rate in KJ/KW-hr. Ans. Rankine engine efficiency (%). Ans. Cycle thermal efficiency ( %). Ans
Water enters the condenser at 20 ̊C and leaves at 35 ̊C. What is the LMTD if the condenser temperature is 40 ̊C?
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case:
3. The evaporator load of a Freon 12 waste water system running at 5°C suction temperature and 40°C condensing temperature is 5 tons. How many gpm must be pumped through a condenser if the condenser is set for a 7°C water temperature rise?
A two-stage R-22 system uses flash-gas remoal and intercooling as in the previous problem. The evaporating temperature is -40 C and the condensing temperature is 30 C. The pumping capacity of the high and low stage compressors is shown below: (from picture solve a and b)
write in hand written
5. Calculate the latent heat of condensation for water at 8 MPa. Compare with values from steam table.