Atmospheric air at 30°C & 30% relative humidity is cooled down through evaporative cooling What wil be the lowest temperature the air can reach? in "C) Round to the closest whole number) O 25
Q: Relative humidity of the air
A: Given; A room contains 35kg of dry air; ma=35 kgwater vapour is 0.5 kg; mv=0.5 kgPtotal=100…
Q: Copra enters a dryer containing 70% moisture and leaves 7% moisture. Find the moisture removed on…
A: Given data, Moisture contain= 70% Leaves = 7%
Q: • nela fiue humidity . SPecific enthaley • Specific humiditg 3. Oew Point . Spechic lolume
A:
Q: The humidity ratio of the air?
A: Given; Air in a room is; T=380CRelative humdity=65%Pressure,p=0.2 MPaSaturation…
Q: What may be considered as an air contaminant? Select the correct response: O Oxygen Concentration A…
A: In the Earth's atmosphere, the air has 78% nitrogen, 21% oxygen and small amounts of lots of other…
Q: d the questions carefully before answering. Box or indicate your final answers when solving and draw…
A: To determine the dryness fraction and the change in enthalpy.
Q: (c) Do gases usually have a constant specific weight?
A: The specific weight of the gas: The specific weight of the gas is also termed as the specific…
Q: Which one of the following statement is correct? * O evaporative cooling and sensible cooling is the…
A: Evaporative cooling is water evaporation through which the air is cooled down to a comfortable…
Q: Sugar preservation dislike salt preservation both are hot process
A: Explain : Sugar preservation dislike salt preservation
Q: PLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air is drawn over a pool…
A: Write the property of water from the Psychrometric chart at temperature T1=100°F and 50% relative…
Q: In general, which is the cause of a sea breeze? A) Pressure B) Specific heat C) Heat D) All the…
A: A) Pressure Pressure difference between land and sea is the main cause of sea breeze. Winds move…
Q: Direction: Graph the heating curve of ethanol using the information given. Check off each item as…
A: Given- Boiling Point = 78 0C Melting Point = -114 0C Starting Temperature = -120 0C After two…
Q: Illustrate the different parts of the cooling system of an internal combustion engine
A: Given:- IC engine To find:- Parts of cooling system
Q: The Quality of the steam is found to be 78 percent, which denotes that Select one: O a. It contains…
A: Given :- The Quality of the steam is found to be 78 percent which denotes that , Select one: O a.…
Q: kg sample of water at 15.0°C is in a calorimeter. You drop a piece of steel with aporation and…
A:
Q: Evaporative cooling PLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air…
A: Given data:
Q: Which is true for Specific heat? Select one: O a. Gases have two values of specific heat. Ob. Solids…
A: a) Gases have two specific heats because they are not stable. b) Solids and liquids have only one…
Q: For Questions 7 and 8 Air enters a humidifier at 34.25°C and 30% RH. If the air leaves the…
A: (7) Write the given data. T1=34.25 °CRH1=30%RH2=70%
Q: kilogram of wet steam is taken as a sample for study. It has a pressure of 0.805 MPa and an enthalpy…
A: For 0.805 MPa we have to use interpolation to get the values for saturation enthalpy
Q: Dry air consists of oxygen, nitrogen O co2 O hydrogen, argon all the above
A: Dry air does not contain water vapor,
Q: Relative humidity represents .3
A: This question is based on the concept of relative humidity from refrigeration cycle.
Q: As the rank of the coal increases, the moisture content _________ a. increases b. decreases c. no…
A: To fill: The blanks of the statement. Explanation: Rank of coal: The rank of coal depends on the…
Q: 7-Explain with a neat diagram with all parameters, the components and working of any one cooling…
A: An car engine may be a great example of a closed cooling framework. Dissipation isn't utilized in…
Q: can you please state the correct and incorrect statements based on its topic. Saturation…
A: A saturated curve has to parts: Saturated vapor curve that separates the two phase region from…
Q: 25,000 cfm of outdoor air is brought into an HVAC system air handling unit (AHU). The air is at 100°…
A:
Q: Question 15 What is the Ideal Gas Law and what does each letter represent?
A: Ideal gas law is the equation which approximate the behaviour of several gases
Q: Q1/ Dose heat capacity affect the body"s cooling and heating processes Give an example
A: We are suppose to solve only one question. Please post other question as a separate question. Heat…
Q: kilogram of wet steam is taken as a sample for study. It has a pressure of 0.805 MPa and an enthalpy…
A:
Q: 3) A large tonk initially contains 200 gallons of brine in ur/e 15 lbs. 0f salt is dissolved.…
A:
Q: the humidity ratio
A: Given: Mass flow rate of moist air=10.1 kg/s Humidity ratio:ω=mvma=0.01 kg/kg of dry air Assuming…
Q: Q-1)An oil company owns two refineries A & B to operate in a month. Refinery A is capable of…
A: Given Data: 350$ per day for refinery A 700$ per day for refinery B Company requires 1200 barrels of…
Q: pen pol oI water is neated on the Stove top. ihe followwing statements best deschbes the…
A: The point at which a phase transition starts or stops is known as the saturation state. The…
Q: In a solar pond, high temperature at the bottom is achieved because of Select one: a. Low salt…
A: In a solar pond, high temperature at the bottom is achieved because of Select one: a. Low salt…
Q: e questions carefully before answering. Box or indicate your final answers when solving and draw…
A: Given:T1=900 KT2=300 K NOTE: According to Bartleyby's policy we shall answer only three sub-parts at…
Q: 2- The dry air is that does not contain: Select one: a. steam b. inert gasses C. oxygen d. nitrogen
A: It is needed to determine what is absent in dry air.
Q: 9. Describe the relevance of degree of saturation. Please select all answers that apply: a) The…
A: ANSWER (9) = OPTION D,E Degree of saturation The degree of saturation denotes the actual…
Q: boiling point
A: 446deg.c-answer
Q: Fluid column contains water, mercury and engine oil. Sequence of fluids from top to bottom are…
A:
Q: Tdb refers to .2 -- the moist air temperature. none of the above. O the wet air temperature. the…
A: what Tdb refers to.
Q: Calculate: a. the speed at which condenses water (kg / min) b. the temperature at which the air…
A:
Q: economic accumulation of petroleum only occurs in ________ basins. a. volcanic b. sedimentary c.…
A: Sedimentary rocks are created by the accumulation of pre-existing rocks or fragments of…
Q: Steam undergoes an Isentropic process where it is initially at 1.30MPa and200C then it expands to a…
A:
Q: Explain details about room comfort condition should consider the following three main factors: i.…
A: Comfort (partial) air conditioning units maintain the temperature and humidity of offices and…
Q: Natural gas is mainly made of O a. Propane O b. Butane O c. Carbon O d. Methane
A: The natural gas is mainly made of methane The biggest segment of natural gas is methane, a compound…
Q: Write equation for finding relative humidity and explain the procedure of finding relative humidity…
A:
Q: Q-1)An oil company owns two refineries A & B to operate in a month. Refinery A is capable of…
A: GIVEN DATA A LPP PROBLEM GIVEN WE HAVE TO WRITE OBJECTIVE OBJECTIVE FUNCTION OF IT
Q: Humidification is a process which involves ......... Water vapor per Kilogram of dry air Select one:…
A: Heating, cooling, humidification, and dehumidification, all these terms are used in air…
Q: At what evaporator temperature does an ice maker usually begin to make ice?A. 35°FB. 32°FC. 25°FD.…
A: The ice maker is used to make ice in the refrigerator. The temperature of the ice maker is lower…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 4 images
- The typical temperature relationship between a standard-efficiency air-cooled condenser and the ambient temperature is A. 50F. B. 40F C. 30F. D. 20F.Welded ______sealed compressors are normally used in household refrigerators.What are higher-efficiency refrigerant blends that can be used as long-term replacements for R-22 in residential and light-commercial air-conditioning applications?
- A typical temperature relationship between a high-efficiency condenser and the ambient temperature is A. 10F. B. 20F. C. 30F. D. 40F.Why are there more safety precautions for R-410A than with other popular refrigerants like R-22 and R-404A?If the evaporating pressure was 76 psig for R-22 and the compressor inlet temperature was 65F, what would be the total superheat entering the compressor? A. 11F B. 21F C. 10F D. 20F
- A. Describe the four processes, which occur in the vapor-compression-refrigeration cycle that youtested.B. How did you figure out the enthalpy at the various entry / exit stages? (I know you lookedat the chart or table provided! I understand that you may have used interpolation.) I want you toexplain briefly how you determined, what principle(s) you used to determine the enthalpy at thevarious points.Sketch a p-h diagram. On this sketch of the p-h diagram you must sketch and show SOME constanttemperature lines, constant pressure lines, constant enthalpy lines, constant entropy lines, quality factorand other significant features of the p-h diagram to show your understanding of the p-h diagram. Labelx & y axis, indicate the units, indicate the critical point. Label various regions,Which of the following is not an assumption for the ideal vapor compression process? a.Isobaric heating in evaporator b.Isobaric cooling in condenser c.Isenthalpic throttling d.Isentropic expansionQuestion 4 A VRF cooling unit, having a cooling capacity of 25 kW, have the following COPS: COP100% = 369, COP75% = 5.72, COP50% = 6.65, COP25% = 8.16. Assume that the cooling unit has 13 hours of usage daily, having standby power of 200 W and energy tariffs of 41 cents per kWh. Using NEA's recommended AEC estimation, determine the annual energy cost up to 2 decimal points. Do not include "S" in your answer. Selected Answer: O 5,643.75 Correct Answer 5,584.12 0.01%
- Question 2 of 4 - / 25 An office building requires a heat transfer rate of 30 kW to maintain theinsidetemperature at 21°Cwhen theoutsidetemperature is O°C. Avapor-compression heat pump with Refrigerant 134a astheworkingfluid isto beused to provide the necessary heating. The compressoroperates adiabatically with an isentropic efficiency of 82%. Determine appropriate evaporator and condenser pressures of a cyclefor this purpose assuming ATcond = ATevap = 10°C, as shown in the T-sdiagram. The refrigerantexitstheevaporator assaturated vapor and exitsthecondenser as saturated liquid at the respective pressures. AT cond Outside air 21°C 0°C Inside air ATent Condenser Evaporator Expansion valve Compressor Step 1 Determinethe mass flow rate of refrigerant, in kg/s. m = kg/s Attempts: unlimited Submit Answer Save for Later Using multiple attempts will impact your score. 5% score reduction after attempt 2 Step 2 The partsof thisquestion must becompleted in order. This partwill be availablewhen…1- Consider two vapor compression refrigeration cycles .The refrigerant enters the hrottling valve as a saturated liquid at.30°C in one cycle and as subcooled liquid at 30°C n the öther one. Tlhe evaporátor pressure for both cycles is the same .Which cycle do you jink will have a higher COP ?A plant using R134a refrigerant has a cooling capacity of 352 kW of refrigeration. It evaporates at 0 Cand condenses at 35 C, with the 5 of superheat at the evaporator outlet and 5 K of sub-cooling at the condenser outlet. Assuming isentropic compression and ignoring pressure drops in the piping, the evaporator and condenser, determi the following; a) The refrigeration effect b) The mass flow rate of refrigerant ) The compressor power d) The rate of heatrejection at the condenser e) The COP 0 The corresponding Carnot COP g) The percentage Carnot-efficiency