Using the aforementioned experimental setup as shown in Fig. 1, three ejectors as shown in Fig. 2 were investigated to determine the effects of the operation temperatures, nozzle exit position, and the diameter of the constant area section, dcas, on the working performance of the steam ejector powered by extra low-temperature heat source. In this investigation, the working performance of the steam ejector mainly includes system COP, cooling capacity and critical condensing temperature [40], Tc*. For the test, the generating temperature, Tg, ranged from 40 °C to 70 °C, and the evaporating temperature, Te, was set at 10 °C and 15 °C, respectively. Figure 3 shows the variation of system COP and cooling capacity with the condensing temperature, …show more content…
Moreover, it can be seen that the cooling capacity could gain 685.4 W when Tg = 65 °C and 482.8 W when Tg = 55 °C. With the increase in generating temperature, the cooling capacity decreased at first and then increased when the generating temperatures ranged from 40 °C to 70 °C. The experiment was repeated under the same conditions. Figure 4 illustrates the effect of the generating temperature on the system COP, cooling capacity and critical condensing temperature of the steam ejector when the generating temperatures ranged from 60 °C to 70 °C. As shown in Fig. 4, the system COP increased first and then decreased with the generating temperature increasing and there existed a maximum value of 0.277 at Tg = 63 °C. The variation tendency of the cooling capacity was similar to that of the system COP, but the maximum value of 734.4 W at Tg = 67 °C. The total pressure of the primary flow in the nozzle was relatively low with the generating temperature set under these conditions. The reason for the …show more content…
As shown, the system COP could achieve 1.259 when Tg = 40 °C and Te = 15 °C. When the evaporating temperature was 15 °C, the system COP was much higher than that when the evaporating temperature was set at 10 °C. But the system COPs were almost the same when Tg = 65 °C. In other words, the cooling capacities were nearly equal when Te = 10 °C and Te = 15 °C at this condition. When Te = 15 °C, the cooling capacity decreased first and then increased with the generating temperatures ranging from 40 °C to 70 °C. This variation tendency is similar to that when Te = 10 °C. The worst performance occurred when the generating temperature was 65 °C, which was 720.3 W. In Fig. 5, it also can be seen that the critical condensing temperature when Te = 15 °C is a little higher than that when Te = 10 °C in most cases. The maximum difference between the two conditions is 3.7 °C when Tg = 55
Air Conditioning Heating & Refrigeration News, 217(6),
However, during his workout he was slightly dehydrated since his urine turned to dark yellow. The urine color and specific gravity are matched in terms of normal values based on the data results. Because the normal specific gravity of urine ranges from 1.000-1.030 according to medlineplus.gov. 2. Based on the urine color and specific gravity, what might Tracey conclude about the hydration status of Max 's body at the three different times? Answer: Since
; Ignition: electronic; Dimensions 25.6" x 18.5" x 12.4"; Maximum flow rate; 6.1 gallons per minute at 60 degrees temperature rise, 4.6 GPM at 80 temperature rise. The T-H2 can be vented with PVC and it uses two heat exchangers to maximize the unit’s energy efficiency. 5. Takagi T-M32 is specifically designed for commercial applications due to its heavy duty
The industry of pressure washing or power washing has never been considered, by most, to be a serious profession. With typically low start up costs, many fly by night companies come and go leaving a bad taste in the mouth of many unsatisfied customers. It happens in all industries, but the pressure washing industry seems to attract almost anybody out of a job or sick of working for the man. A couple hundred dollars and a trip to the local home improvement store to purchase a pressure washer, and they are in business.
Patient is a 63 year old male complaining of cough that may have started 15 years ago but worsened with in the past 5 years since moving from Vietnam to the U.S. Currently living in SF Valley with cough being at its worse in the morning, often dry cough, sometimes productive throughout day. Patient denies fever, exception being from illness. Occasional red blood, chest pain, back pain, SOB, and DOE. Patient has stated that he has difficulty filling lungs with air and that the cold makes him cough more, while “Teas” tend to help a little. With all that is happening to this patient it leads me to ask, what is the process of gas exchange in the lungs?
The first section of Out of This Furnace is about the story of Djuro Kracha coming to America from Hungary, and the struggles he, his family, and friends had to go through. The American Dream is defined as “the ideal that every US citizen should have an equal opportunity to achieve success and prosperity through hard work, determination, and initiative,” but many immigrants were unable to achieve the American Dream. Kracha and his family were just a few of the immigrants who did not achieve the American Dream as they had expected. Throughout the first section of Out of This Furnace the difficulties that the workers on the railroads and in the steel mills face become apparent. The mock title “Where is the American Dream?” fits the first section
Waves & Vibrations Essay Steam Engine as a Forced Oscillator by Patrick Coyle The steam engine is a perfect example of a forced oscillator as the piston oscillates back and forth. The steam engine is a forced oscillator as it is a heavily dampened system that has a force to counter the resistance and keep the piston moving at a constant oscillation until the force is removed from the system. [1] Figure 1: Glass working steam engine [2] Figure 2: Steam engine diagram Due to the steam engine being quite heavily damped this oscillator will just simply stop without a force to compensate for the resistance within this system.
Condensers and Evaporators for Chevrolet C1500 The Chevrolet C1500 truck's A/C system requires several parts that depend on each other to function, including a condenser and evaporator. You should consult your Chevrolet owner’s manual if you’re considering removing these parts. Most importantly, you should know the function of the condenser and evaporator before repairing or replacing them. What function does the Chevrolet C1500 condenser and evaporator serve?
The Industrial Revolution comprised of a progression of stunning mechanical leaps forward in the substitution of mechanical devices for human abilities, the substitution of people and animals, most particularly steam power for human and animal power, and tremendous enhancements in acquiring and working crude materials, particularly in designing, planning and in sciences. Associated first in coal mining and materials, the new frameworks, new machines, and new procedures rapidly spread into other modern regions. The utilization of steam for transportation for example, prompted the railroad framework, vastly increasing the amount, speed, and reliability of goods moved over long distances. This tied the country into one unified market, and created
The Curtis Revolution eventually reaches its destination at the engine room, where the leader and inventor of Snowpiercer resides and dictates everything that happens in his train. Though the engine room may initially appear as a sanctum of power and control, Bong Joon-ho once again manipulates recurring colors and the actual symbol of the engine in order to illustrate the engine room as ominously similar to the tail section it oppresses most. With this motif of an unfairly ordered train, Joon-ho achieves a enlightening revelation about Snowpiercer's system as a whole, as the immoralities of its capitalistic social structure are fully exposed along with the train's entire length. Joon-ho makes a statement concerning the humanistic qualities of the lower and higher class through the unsuspected similarities in color tones from the very back to the very front. When comparing the colors that make up the front and those in the back, both consist of the same bleak undertones that were initially introduced with the impoverished, dirty lower class.
Amazon 5 Bullet Points: TOOL-FREE INSTALLATION: Everything is included for easy tool-free installation. Handheld shower head is 4” in diameter and comes with brass hose nuts for easy hand tightening and Teflon plumbing tape for added convenience. The transition to a convenient handheld shower head is quick and hassle free.
Rediet Legese iLab Week # 6 CRUDE OIL DISTILLATION Introduction: The aim of this week lab experiment is to experiment distill crude oil and to check how temperature determine the chemical properties of crude oil plus how the boiling point can also show physical properties. They are two major finding in this experiment. he first finding was the point at which the raw petroleum is heated to the point of boiling, at 275 0C, the gas and kerosene oil are refined, however the oil (lubricant ) stays as an unrefined feature oil.
James Watt was not the one to invent the steam engine, but he took this idea from Thomas Savery and change so it is easier to use and allows you to not waste fuel and steam. James Watt created a unit of electrical power measurement called Watts, invented an attachment for telescopes that measures distance, while making responsible risks to innovate the already created steam engine which allowed the society to use it without wasting fuel and steam. A rotary engine was a simple way many people used to drive machinery. A double -action engine was invented by James watt in 1772.
Therefore LCVGs uses smaller diameter tubes with low wall thickness. Desired heat transfer rates are achieved by controlling the flow rate and by increasing the number of tubes to increase the effective area of heat transfer (Cengel,
Abstract— Now a days, the vehicles are known for producing a large amount of harmful gases like CO2, SO2 etc. which act as the major source for global warming and are also reason for environmental pollution. So, research is going on to find a vehicle which does not pollute the environment. Compressed air is one of the best solutions to reduce the global warming and environmental pollution. The compressed air is used as a fuel in the vehicle which is easily available in nature and also it is very economical.