Fish in lakes beside power plants, which use lake water for cooling, are subject to the danger of suffocation as a consequence of "thermal pollution", because _____________________. a. dissolved oxygen decreases as temperature of the lake waters increase b. dissolved oxygen increases in the lake waters c. gas solubility increases as temperature goes up d. the power plant noise disturbs the fish

Fish in lakes beside power plants, which use lake water for cooling, are subject to the danger of suffocation as a consequence of "thermal pollution", because _____________________. a. dissolved oxygen decreases as temperature of the lake waters increase b. dissolved oxygen increases in the lake waters c. gas solubility increases as temperature goes up d. the power plant noise disturbs the fish

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

Chapter50: Commercial, Packaged Rooftop, Variable Refrigerant Flow, And Variable Air Volume Systems

Section: Chapter Questions

Problem 18RQ: Explain how carbon dioxide levels can be used to estimate the occupancy level in a particular area...

See similar textbooks

Similar questions

What are the "refrigeration and cyogenic plant" EQUIPMENT for Oxygen production in terms of mechanical, electrical, plumbing and safety with a mechanical system and its importance? Elaborate well
26. At 100°C water has a specific latent heat of vaporization of 2260 000 J/kg. What does this mean? A. Energy needed to turn 1 kg of water into ice B. 2260 000 J energy needed to turn 1 kg of ice into water C. 2260 000 J of heat is needed to boil 1 kg of steam into ice D. 2260 000 J of heat is needed to convert 1 kg of steam into water
what are the instruments/materials used by scientist to study Thermoclines under water.
Fill the balks with the correct word/words d-For turbulent flow, Reynold Number is e- A pump is a rotodynamic pump that converts mechanical energy to hydraulic pressure energy. f- turbine can be used in rivers, man-made channels, tidal waters. g- The First Law of Thermodynamic state that__ h- i- is a change in the system from one equilibrium state to another. transfer heat from low to high temperature stages by using mechanical work. j- Adiabatic process means
Explain how carbon dioxide levels can be used to estimate the occupancy level in a particular area in a structure.
AB POWER ENGINEERING Introduction about the cooling system of internal combustion engines use in agriculture, and how cooling system works
Engineering Related problems: We assess the efficiency of two methods of chemical energy storage.I. First, we store the energy as natural gas (methane, CH4) and utilize it via combustion. We assume thefollowing efficiencies: electrolysis 70%, water-gas shift reaction 75%, natural gas storage andcirculation 80%, Fischer–Tropsch reaction 80%, combustion 75%. Based on these efficiencies, calculatethe efficiency of the total process.II. Secondly, we want to store the energy as hydrogen and utilize it via a fuel cell. We assume thefollowing efficiencies: electrolysis 70%, hydrogen storage and circulation 70%, fuel cell 50%. Calculatethe efficiency of the total process.III. Which of the two methods would you choose to use the hydrogen produced during electrolysis?
A petroleum cut has the specific gravity (SG = 0.825 at 60 *F) and the mean average boiling point is 288 "F. Calculate the following: 1. Heat of combustion in Btu/lb? 2. Gross heat of combustion? 3. What is the difference between the results of the two answers? Compare and discuss? (Note Use the following chart) (Tip: 1 Btu/lb = 2.326 KJ/Kg) %3D 200 PETROLEUM REFINERY ENGINEERING - 20,400 120 - 20,200 - 20,000 I1.5 - 19,800 IL3 - 19,600 I1.2 -19,400 ILO s-19,200 19,000 18,800 103 - 18,600 18,400 18,200 - 18,000 - 17,800 - 17,600 10 10 20 30 40 50 60 70 A.RLGravity Gross Heat of Combustion Btu. per Pound Cheracterization factor,
c. Saturated air at 50oF db is heated to 80oF dry bulb without the addition of moisture. If 1000 cfm of air enters the heater, determine the heat transfer rate.Answer: __________heat transfer rate Btu/min d. Air at 40oF db and 35oF wb is mixed with warm outside air at 100oF db and 77oF wb in the ratio of 2500 cfm cool air to 1000 cfm warm air. Find the resulting humidity ratio and enthalpy on the basis of volume flow rates.Answers: a. __________humidity ratio lb/lb d.a.b._____________ enthalpy Btu/lb
a) A woman tells an engineer that she stands in front of an open refrigerator, she feels cooler. But the engineer tells that it is impossible because the fan of the refrigerator is not running and this is only a psychological effect. Which side do you take ? Why ? b) Hot air at 50 C does not cause a lethal burn on our skin, but water with the same temperature is dangerous and it can burn our skin. Explain the reason? Any SAME answer from the internet sources or your friends will give you ZERO (0) point. *
1. If 1 gallon of oil = 1.4 therm, how many gallons have been wasted by heat loss in Feb? (1 therm = 100,000 BTU)_____________________________________________________________________________________2. If $1.30 per therm, how much did you waste from house heat loss in Feb?
Identification: Identify what is being asked. 1. Give the STP used in Thermodynamics.2. Enthalpy of an ideal gas is a function only of _____________.3. The theory of changing heat into mechanical work.4. Form of energy associated with the kinetic energy of the random motion of largenumber of molecules.5. Superheated vapor behaves _____________.