Applied Heat past Examination Questions 1. An Ammonia refrigerator is to produce 2 tonne of ice per day at -4°C from water at 20°C. if the temperature range in the compressor is between 25°C and -6°C‚ Calculate horse power required to derive the compressor. Latent Heat of ice = 80 kcal/kg‚ and specific heat of ice= 0.5 2. A compressor draws 42.5 m3 of air per minute in the cylinder‚ at a pressure of 1.05 kg/cm abs. It is compressed Polytropically pV1.3=C to a pressure 4.2
Premium Internal combustion engine Thermodynamics Diesel engine
layer temperature distribution at a given location on the plate may be approximated as T = 30 + 70 exp ( −y ) where y (in m) is the distance normal to the plate and T is in °C. If thermal conductivity of the fluid is 1.0W/mK‚ the local convective heat transfer coefficient (in W/m2K) at that location will be (A) 0.2 7. (B) 1 (C) 5 (D) 10 A frictionless piston-cylinder device contains a gas initially at 0.8MPa and 0.015 m3. It expands quasi-statically at constant temperature to a
Free Heat transfer Heat Fluid dynamics
In the 1995 Chicago Heat Wave‚ mortality was related to living alone in that living along doubled a person’s chance of not surviving the heat wave. On the other had‚ and form of social connection lessened the chance of dying. Some of the main reasons that this relationship exists are because most of the people living along were older people and increasingly people with poor mobility were living alone. Living alone as an aging person was thought to be the ideal way for them to live because it gave
Premium Poverty Homelessness Homelessness in the United States
Commercializing the Kunst 1600 Dry Piston Vacuum Pump Q1. List the major quantifiable value and price elements associated with the Kunst 1600. Answer: With its enhanced features‚ the Kunst 1600 is able to pump just as efficiently as a traditional 6 CFM pump in the same amount of time‚ but because it is a compressor‚ it can run longer and cooler than any conventional pump and requires no oil changes! Savings on oil changes‚ cleanup costs‚ and disposal fees alone can equal almost $1‚300* per
Premium Marketing Target market Microeconomics
refrigerator repairs. In all other segments‚ repair firm revenues remain the same regardless of which pumps are used. Price Element: • Increased pump durability -- The Kunst 1600 lasts 2 to 3 times longer than the incumbents in most segments. This means that repair firms will have to buy more conventional pumps than Kunst 1600s. This impacts theprice a repair firm has to pay for conventional pumps (i.e.‚ 2 to 3 times greater) and not the number of jobs it can complete! In the economic sense‚
Premium Microeconomics Income Revenue
Aims The purpose of the two experiments was to determine the fundamental effects that temperature has on the growth and survival of bacteria. During the first experiment five different bacterial broth cultures of Escherichia coli‚ Pseudomonas fluorescens‚ Enterococcus faecalis‚ Bacillus subtilis and Bacillus stearothermophilus were individually incubated at temperatures of 5‚ 25‚ 37‚ 45 and 55°C for one week in an aim to distinguish the effect temperature has on growth and survival of the five different
Premium Bacteria
Heat Exchanger Rupture and Ammonia Release The CSB Case Study on the incident‚ examines the events leading up to the rupture of the heat exchanger and the ammonia release‚ and the corresponding emergency response to the event. It is clear that there were many failures and opportunities to correct and prevent this incident from occurring. As they performed their investigation‚ they were able to identify several direct‚ contributing‚ and root causes‚ although they don’t specifically designate
Premium
grout.Henan Daswell Machinery Co.‚ Ltd‚is a professional manufacturer and trader specializing in the research‚ development and production of construction machinery for nearly 30 years. Our main products are as follows:block making machine‚concrete pump‚We will provide you with the best product and service. The JZC series concrete mixer is to mixer when turning clockwise‚ and discharge when turning anticlockwise and can mix plastic and semi-stiff-consistency concrete. What’s more‚ the machine has
Premium Concrete Mix Construction
3rd Year Thermodynamics Lab Report Mechanical Engineering Science 10 Forced Convection (in a cross flow heat exchanger) Summary The aim of this lab is to determine the average convective heat transfer coefficient for forced convection of a fluid (air) past a copper tube‚ which is used as a heat transfer model. Introduction The general definition for convection may be summarized to this definition "energy transfer between the surface and fluid due to temperature
Free Heat transfer Heat Convection
The Theme of Continuity in the novel Heat and Dust Ruth Prawer Jhabvala’s novel Heat and Dust tells the story of a young British woman Anne tracing the footsteps of her step grandmother Olivia in India. In this closing passage‚ Anne reflects upon their similar lives in India‚ inspiring the continuation of her journey in India. By drawing parallels between Anne and Olivia‚ inducing a change in setting‚ portraying the fading of time and environment and depicting Anne’s wish for ascension‚ Jhabvala
Premium Mountain