Question 10Chillers are commonly used in centralized cooling systems to extract heat from the working fluid of the building cooling system and reject this heat to the outdoors.O TrueO False Question 5Neglecting internal heat sources while calculating heating loads underestimates the required heating system size.TrueFalse

Answered: Question 10 Chillers are commonly used…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Instruction: Show all your solution and Use the steam table, attached: https://drive.google.com/file/d/1I3WGlSBL7MbPkhEfJumTc2vCjvLfyXB6/view?usp=drivesdk A reheat cycle with two stages of reheating is executed, with steam expanding initially from 90 bar and 530°C. The two reheater pressures are 10 bar and 0.6 bar, and the steam leaves each reheater at 480°C. Condensation occurs at 0.03 bar. What is the steam flow rate in kg/s for an engine output of 20,000 kW?
Which is the most accurate description of one of the system's processes? A Fluid moves from the secondary pipes into the ground. B Fluid moves from the primary pipe into the building. Fluids circulate separately inside both pipes. D Fluid moves from the secondary pipe through the heat exchanger to the primary pipe.
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It is based on the centralised production of chilled water and its distribution for a wide range of indoor air cooling purposes. Consumer Substation Thermal Energy Storage Tanks Hot Plate heat exchanger District Cooling
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Select all the correct statements given below It is impossible to raise the temperature of cooling water above the condensation temperature in a condenser In an ideal Rankine Cycle, condensation takes place under isobaric and isothermal conditions In a surface condenser, condensation takes place at atmospheric pressure and temperature. A wet pump is used to remove excess cooling water in a surface condenser
A R22 refrigeration system is used to operate between 45degC and -30degC. The total cooling capacity is 350 kW. a. What is the ideal COP of the system? b. What is the heat rejected by the system? c. What is the total power consumed by the system? There are several steps made to improve the performance of the system. What happens to the COP, heat rejected and power consumed by the system when: d. For the same evaporator and condenser pressure, the temperature at the entrance of the compressor is -20degC, and the inlet to the expansion valve is subcooled by 5degC. Due to the wide temperature gap, it is decided to use a two-stage refrigeration system using flash gas removal and optimal intercooling operation in a flash chamber. What happens to the COP, heat rejected and power consumed by the system when: e. Having a low pressure and high-pressure compression. f. Two evaporators and two compressors, with the lower temperature evaporator having a cooling capacity of 225 kW. Notes: The…
What happens if the evaporator fan motor do in a refrigerator stops during the cooling cycle? Select the correct answer: A. the uni maintains 35 to 45 degrees B. the unit temperature falls below 32 degrees C. th unit shuts down D. the evaporator freezes over and the temperature rises
In the mechanical heat pump, what is the type of process that occurs in the expansion valve? Select one: a. Isentropic. b. Adiabatic. c. Isobaric. d. Isothermal. Question /
In actual design, as per illustration Fig. MT 1, the system has a liquid reservoir also acting as an accumulator. The line that connects to the thermal expansion valve is connected underneath the accumulator. This will ensure that only ___ refrigerant will be atomized by the value supplied to the evaporator. SUBJECT: REFRIGERATION SYSTEMS

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Question 10 Chillers are commonly used in centralized cooling systems to extract heat from the working fluid of the building cooling system and reject this heat to the outdolors O True O False