User Account

All Pages

Determine the rate of heat supplied to the room

Assignment Help Mechanical Engineering
Reference no: EM131406084

Consider a heat pump that operates on the vapour-compression refrigeration cycle and uses R-134a as the refrigerant with a flow rate of 0.07 kg/s. The heat pump is used to keep a room at 22?C when the outside temperature is -8 ?C. The operating pressure limits are 140 kPa and 1000 kPa, and the compressor has an isentropic efficiency of 86%.

(a) Draw a T-s diagram for this heat pump system and label the important temperature points.

(b) Comment on whether or not this heat pump will be able to provide the heating necessary for this room by analyzing the temperature points you labelled in part (a).

(c) Determine the power required to drive the heat pump (in kW).

(d) Determine the rate of heat supplied to the room, and the COP.

Reference no: EM131406084

Questions Cloud

Company strategy has local sustainability standards : Why do our textbook author state that if the company's strategy has local sustainability standards, the structure of the company should be decentralized (Epstein & Buhovac, 2014)?
How is critical thinking beneficial in creating clear thinki : How is critical thinking beneficial in creating clear thinking? Are they the same? What are examples of critical thought that should be considered when making decisions?
Was there an enforceable contract : Was there an enforceable contract? If so, what is its scope, and why? Was Washington Regional bound to negotiate in good faith? When can a party act with self-interest and walk away from a deal that becomes economically unfavorable?
Write a manifesto about the nature of power and domination : In this paper, you are being asked to write a manifesto about the nature of power and domination. Using no less than four of the writers we have read in the POWER section of the course.
Determine the rate of heat supplied to the room : Comment on whether or not this heat pump will be able to provide the heating necessary for this room by analyzing the temperature points you labelled in part (a).
Calculate direct labour per cost : The spread manufacturing machine produces 10kg of MNS per one machine hour and 10kg of MSS per one and half machine hours. This machine has a total annual production capacity of 1 900 hours. The machine can only produce one type of spread at a ti..
Diversity management in a health care environment : What is the business perspective for inclusion of diversity management in a health care environment? How has diversity management been addressed in your organization? answer with a reference please.
Implementing change in HR management - habitus case study : Implementing Change in HR Management coursework - Habitus case study. Type a brief email to Habitus outlining the current presenting problems as you see them to be included in your report
Demonstrating the importance of nfpa standard 25 : Write an essay demonstrating the importance of NFPA Standard 25 and how the standard positively influences fire protection and firefighter safety.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Saturated steam is to be condensed on shell side of heat

Saturated Steam is to be condensed on the shell side of a heat exchanger at 75°F. Cooling water enters the tubes at 50°F at a rate of 45 lbm/s and leaves at 65°F. Assuming the heat exchanger to be well-insulated, determine the rate of heat transfer i..

  What is the heat dissipation per chip

If N = 120 chips attached to the outer surfaces of the heat sink maintain an approximately uniform surface temperature of T 2 = 50°C and all of the heat dissipated by the chips is assumed to be transferred to the coolant, what is the heat dissipat..

  What temperature will be indicated by the thermocouple

The air temperature in the oven is 350?C, and the convection coefficient between the air and the sensor is 40 W/m2 · ?C. What temperature will be indicated by the thermocouple?

  Determine the volume flow rate and the density of the gas

carbon dioxide gas enters a pipe at 3 mpa and 500 k at a rate of 2 kgs. the gas is cooled at constant pressure as it

  What is the temperature of the system

If the system is insulated from its environment and the magnetic field is reduced to 0.000 001 tesla, the magnetic moment remaining unchanged, what is the new temperature of the system?

  Determine the initial discharge rate of water

The tank air pressure above the water level is 300kPa(absolute) while the atmospheric pressure is 100kPA. Neglecting frictional effects, determine the initial discharge rate of water from the tank.(Density of water=1000kg/m^3)

  Does heat or work flow across the boundary

The system consists solely of the liquid. Does heat or work flow across the boundary between the system and surroundings? Justify your answer.

  At t0 bullet a is fired vertically with an initial velocity

at t0 bullet a is fired vertically with an initial velocity of 450 ms. after 3 seconds bullet b is fired upward with an

  Design the shaft for fatigue loading

Design the shaft for fatigue loading. Use distortion energy theory and Soderberg criteria in the design. Note that the shaft is machined. The flywheel and the cranks are fixed to the shaft with sled runner type of keys.

  Write the euler equations in the 2d r-? coordinate system

Derive the nondimensional form of this equation by using the following characteristic quantities for the dimensional analysis

  A 075m3 tank contains nitrogen at 150kpa and 40degc 20 kg

a 0.75m3 tank contains nitrogen at 150kpa and 40degc. 2.0 kg of oxygen are added to the tank. what is the final

  Make a mohr circle representation of this stress state

Treat this as a static loading problem, ignoring fatigue and stress concentration. Identify the specific shaft location subjected to the most severe state of stress, and make a Mohr circle representation of this stress state.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd