Air conditioning units are sometimes placed on the roof of homes in the city. Occasionally, the air conditioners cause an undesirable hum throughout the upper floors of the homes. Why does this happen? What can be done to reduce the hum?

Q: Performance of any heat engine is expressed with the help of coefficient of performance (COP) True…

A: Heat Engine Heat engine is a device that is used to convert heat into work. the heat is taken from…

Q: Q12: what is the reason for using the thermo-electric refrigeration systems in aerospace? What is…

A: Reason for using the thermo-electric refrigeration systems in aerospace Thermoelectric air…

Q: answer this;  Discuss which factors must be considered when selecting an appropriate refrigerant?

A: When selecting a refrigerant, there's a complex interplay between several factors, demanding a…

Q: The above refrigeration system uses R-12 as the refrigerant, determine: 1. Enthalpies at each point…

A:

Q: Explain the principle of operation of a refrigerator (include a simple diagram).

A: Refrigerator is a device which gives refrigerating effect by consuming work.

Q: 5, 5. 6 8 5 40°C R-22 QAA = 50 kW A 0°C mB = 0.3 kg/s B -20°C Tin = 10°C 7 9 3 2 1 2 The above…

A: Note: As per guidelines only the first three questions in a multipart question can be solved, for…

Q: 1_ what Proposed integration of thermoelectric refrigerator with the PV solar system?

A:

Q: A vapor compression refrigeration system has a condensing pressure of 15 bars. The R-12 is…

A:

Q: Discuss the difference between a heat engine and a refrigerating machine. Also explain in detail…

A:

Q: Q8. In a refrigeration system using Refrigerant-134a as a working fluid, which condenser pressure…

A:

Q: erally placed between (a) last superheater or reheater and air preheater (b) induced draft fan and…

A: given: An economiser is generally placed between (a) last superheater or reheater and air preheater…

Q: The figure shows a two-stage, vapor-compression refrigeration system with two evaporators and a…

A: Given:Refrigerant= AmmoniaCompressor 1 inlet pressure, P1=12 lbf/in2Compressor 1 exit pressure,…

Q: 13 .Mexico's metro requires the implementation of an air conditioning system for each of its cars.…

A: To find: (a) The amount of energy to be removed from the car. (b) The amount of energy to withdraw…

Q: Task 5 Illustrate the contradiction between refrigeration cycles and the second law of…

A:

Q: 1. What are the motivations for developing hermetic compressors? 2. Why is it impractical to apply…

A:

Q: Consider step 2 of the refrigeration cycle. Which of the following statements is the correct…

A: Option first is correct: An increase in pressure causes the refrigerant gas to evaporate.

Q: the following is example for closed system?  a. Internal combustion engine  b. Gas turbine  c.…

A:

Q: The COPs are defined differently for heat pumps and airconditioners. Explain why.

A: The expression of the coefficient of performance of the heat pump is given by, COPHP=QHQH-QL......1…

Q: Is it true or false for any gas? Cp - Cv = R also , the Whp = Wr + 1 for control refrigerator

A: It is asked to validate the relation Cp-Cv = R and COP ,HP = COP,R +1

Q: Can you explain the parts of the vapor compression refrigeration machine below

A: The vapor compression refrigeration machine is based on the vapor compression refrigeration system.…

Q: Which of the following is an example of an external irreversibility associated with a power plant?…

A: Irreversibility:  It is the process in which heat is transferred through a finite temperature. It…

Q: Describe how the principles in the “First Law of Thermodynamics” applies to a solar dish-engine…

A: First law of thermodynamics: According to this law,” the energy of an isolated system remains…

Q: Problem 2 A window air conditioner consumes 0.8 kW of electricity during steady-state operation. If…

A:

Q: a metal bar is made up of 3.0 cm of aluminum and 5.0 cm of steel. the free end of the aluminum bar…

A: Given data:

Q: Order the type of compressor from the one having the least amount of heat transfer to the one having…

A: In thermodynamics, there are three types of processes that a compressor can undergo: isentropic,…

Q: Problem 3 - Air Conditioning ( An office building has a window air conditioner with a COP of 2 that…

A:

Q: Which of the following will be useful for modelling O No-flow Energy Equation O Steady Flow Energy…

A:

Q: Air conditioners are rated by their coefficient of performance at 74?F inside temperature and 92?F…

A: Given that  Air conditioners are rated by their coefficient of performance at 74?F inside…

Q: The COP of a Carnot heat pump

A: Given; The COP of carnot HP operating  b/w   ⇒ 60C and 370C

Q: air-conditioner is aree such coolir naratus ciew poir

A:

Q: Which refrigerant–absorber combinations are used in absorption refrigeration systems?

A: Vapour Absorption Refrigeration System(VARS) works on Low Grade Energy(Heat). Hence, the COP is…

Q: For which of the following processes does a gas do work? adiabatic expansion O isobaric compression…

A: Given: Processes for which gas does work.

Q: Modern (latest) innovation in domestic refrigerators and air conditioners.

A: given; Modern (latest) innovation in domestic refrigerators and air conditioners.

Q: 1. Describe the four processes which make up the ideal vapour compression cycle.

A: Vapour Compression Refrigeration Cycle works on the principle of Rankine Cycle having 3 reversible…

Q: The mass flow rate of the refrigerant in a Single Stage Vapor Compression (SSVC) refrigeration…

A:

Q: Describe how a heat engine operates and sketch a diagram showing the main elements of this system.

A:

Q: Draw the P-h diagram for an ideal refrigeration cycle and show the locations of the main equipment…

A: Step1: First of all, draw the P-h diagram of an ideal refrigeration cycle as shown below, Process…

Q: Calculate the coefficient of performance of this refrigeration cycle. If the cycle is absorbing 1130…

A: Since you posted a question with multiple sub parts, we will provide the solution only to the first…

Q: 2. The capacities of refrigeration units are commonly given in "tons", which corresponds to how many…

A: To findCOP of the refrigerator.The amount of electric power that is required by the…

Q: Refrigeration is desired at a Temperature of -5.6°C (minus 5.6 degrees C). Heat is rejected at a…

A: Given   Maximum temperature, Tmax = -5.6oC = 267.4 K   Minimum temperature, Tmin = 36.7oC = 309.7 K…

Q: Air conditioner using R-22 works on the condensing evaporating pressures of 99.36 psia and 19.62…

A: INTRODUCTION : Air conditioning is used to keep a room cool in comparison to the outside…

Q: ciency of what cycle is determined using a parameter called "thermal efficiency"? power cycle…

A: To determine efficiency of what cycle is determined using a parameter called "thermal efficiency".

Q: Refrigerant 22 is the working fluid in a Carnot refrigeration cycle operating at steady state. The…

A:

Q: As shown in the figure, an air conditioner operating at steady state maintains a dwelling at 70°F on…

A:

Q: Describe a refrigerator that violates the Clausius statement of the second law

A:

Q: Determine for the cycle the mass flow rate of cooling water, in lb/h. mcw = i lb/h

A: