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Heat exchanger for ammonia absorption refrigeration system?
there are two type of heat exchanger in absorption refrigeration, first is liquid heat exchanger and other is gas heat exchanger.both heat exchanger function is same, to transfer heat (hot medium to cold medium) without violate second newton law of thermodynamics. liquids heat exchanger is between boiler and absorber vessel mean while gas heat exchanger between evaporator and absorber.
Why use LMTD and not mean temperature difference?
Because the temperature change that occurs across the heat exchanger from the entrance to the exit is not linear, and a logarithmic function best describes this temperature change.
What does sintered mean?
Formed into a mass by heat and pressure
What does thermal technology mean?
heat technology a.k.a thermometer
What is the thermo mean device for regulating furnace heat?
Thermostat
Heat exchanger for ammonia absorption refrigeration system?
there are two type of heat exchanger in absorption refrigeration, first is liquid heat exchanger and other is gas heat exchanger.both heat exchanger function is same, to transfer heat (hot medium to cold medium) without violate second newton law of thermodynamics. liquids heat exchanger is between boiler and absorber vessel mean while gas heat exchanger between evaporator and absorber.
Why you we use log mean temperature difference formula?
The use of the LMTD arises straightforwardly from the analysis of a heat exchanger with constant flow rate and fluid thermal properties. It is a simple method to approximated the temperature diving force in a heat exchanger. The LMTD is a logarithmic average of the temperature difference between the hot and cold streams at each end of the exchanger. The larger the LMTD, the more heat is transferred.
What is the effect of overall heat transfer coefficient U to heat exchanger performance?
The equation for the duty of a heat exchanger is:Q=U*A*LMTDwhere:Q is the dutyA is the overall heat transfer areaLMTD is the log mean temperature difference.generally when desiging heat exchangers the desired duty is known, as are the desired inlet and outlet temperatures. Therefore we solve for A to find the overall heat transfer area.A= Q/(U*A*LMTD)If we hold Q and the LMTD constant, you can see that a larger overall heat transfer coefficient U, will result in a small exchanger area and, therefore; a smaller, less expensive piece of equipment.The the greater the U, the better the performance.
What is mean TR Fabric?
fabric with special features, i.e. good heat exchanger, modified absorbing characterstics. they have good strength over conventional fibres.
What does the latin work trepidus mean?
Nervous; agitated.
Why use LMTD and not mean temperature difference?
Because the temperature change that occurs across the heat exchanger from the entrance to the exit is not linear, and a logarithmic function best describes this temperature change.
What does agitato mean in music?
It actually means 'in an agitated manner'.
What does churning mean?
It means a vessel or device in which cream or milk is agitated to separate the oily globules from the caseous and serious parts, to make butter.
What does the word pocopiuagitato mean in music terms?
It is Italian for "slightly more agitated"
What does MV mean in shipping terms?
Merchant Vessel or Motor Vessel.
What is ntu in thermodynamics?
NTU is nothing but Number of Transfer Units. It is one of the method used to find the heat transfer of hot and cold body it is applicable to both parallel and counter flow.============The NTU Method is used to calculate the rate of heat transfer in heat exchangers when there is insufficient information to calculate the Log-Mean Temperature Difference (LMTD). If fluid inlet and outlet temperatures are specified or can be determined by simple energy balance, the LMTD method should be used; but when these temperatures are not available The NTU or The Effectiveness method is used. It is based off of the maximum possible heat exchange in an infinitely long heat exchanger. From this, different heat exchangers can be compared and estimates of actual heat exchange calculated based on the NTU effectiveness.
What is an ocean going vessel mean?
ocean vessel..as in...ship, youre welcome
