Pengaruh Laju Aliran Air terhadap Temperatur Sistem Mesin Pengkondisian Udara Hibrida Menggunakan Kondensor Dummy Tipe Helical Coil (Diameter Pipa 1/4") sebagai Water Heater dengan Pembebanan 2000 Watt

Energy saving is one way to reduce energy USAge without decreasing the results. This way can be obtained byusing the hybrid air conditioning. Other than energy saving, the hybrid air conditioning also can reduce theeffects of global warming by condenser waste heat recovery. This research aims to investigate the effect ofvariations flow rate in water heater tank to the system temperatures of hybrid air conditioning using helical coiltype of dummy condenser with 1/4˝ diameter of copper pipe. Experimental method is used in this research. Thetest was conducted with several water flow rate variations (1/3, 2/3, and 3/3 valve openings) and using coolingload of 2000 Watt as residential cooling load simulation. The result showed that the water temperature in waterheater tank was changed in every water flow rate variations. The highest water temperature was obtained at39.77˚C for 0 valve opening (full-closed valve), but, the lowest water temperature was obtained at 32.57˚C in3/3 valve opening (full-open valve)

Pengujian Thermoelectric Generator (TEG) dengan Sumber Kalor Electric Heater 60 Volt Menggunakan Air Pendingin pada Temperatur Lingkungan

Thermoelecric is a phenomena to convert from temperature difference into electrical energy that can be called Thermoelectric Generator (TEG) or from electrical energy into temperature difference that is called Thermoelectric Cooling (TEC). The Thermoelectric Generator (TEG) principle is known as the seebeck effect, while the Thermoelectric Cooling (TEC) principle is known as peltier effect. The purpose of this research to determine the effect of thermoelectric module number on maximum power, maximum voltage and maximum efficiency. This research uses thermoelectric module, type TEG SP 1848. The cold side of thermoelectric module uses water at ambient temperature with flow rate 1.7 liter / minute. With a input voltage regulator of 60 V to heat the electric heater. From the test using 1 module, 2 module, 3 module, and 4 module thermoelectric type TEG SP 1848, the maximum voltage of 0.39 V, 0.47 V, 0.54 V, and 0.62 V, the maximum power generated of 0.032 W, 0.082 W, 0.164 W, and 0.272 W and the maximum efficiency of 0.36%, 0 .42%, 0.92%, and 1.30%. The more number of thermoelectric modules used during the test, the resulting voltage, power and efficiency will increase

Pengaruh Laju Aliran Air Sistem Evaporative Cooling terhadap Temperatur Sistem Mesin Pengkondisian Udara

Evaporative Cooling is an air conditioning system that uses water to cool and add moisture or humidity in the air flow, so ball temperature is dry become cooler before experiencesublimate process. Media temperature change influence coolant to water debit change whichis if water temperature the greater, therefore resulting water debit will get little conversely if water temperature gets little, therefore resulting water debit will be even greater. Media temperature change influence water cooler to its air humidity if coolant media temperature the greater therefore resulting air humidity also the greater too. On this research streaming debit that result effectiveness at the best which is in a row 1,2, 1,04, and 0,8 liters / minutes. Besides with marks sense purpose increase evaporative cooling can make kompresor'scharges gets demulcent

Pengaruh Beban Pendinginan terhadap Temperatur Sistem Residential Air Conditioning Hibrida dengan Kondensor Dummy Tipe Multi Helical Coil Menggunakan Refrigeran Hidrokarbon

One way to save the energy is to improve the energy efficiency with combining two different equipmentsbecome one new double-function or hybrid equipment. Hybrid air conditioning can improve energy efficiency byremoving waste heat to the environment through condenser for heating water. The objective of this experimentalstudy is to investigate the effect of cooling load to system temperature of vapor-compression cycle hybrid airconditioning system with multi helical tipe of dummy condenser. The test was conducted with several coolingload variations (0, 1000, 2000 and 3000 Watt) as residential cooling load simulation. The result showed that therefrigerant temperature while using HCR-22 was obtained about 67.47 °C to 72.93 °C. The temperature ofrefrigerant was increased as well as the applied cooling load to be increased. The temperature of refrigeranthad more heat which to be absorbed and released into the environment so that the produced water temperaturewasalso increased. Hot water temperature of the ACWH system using HCR-22 refrigerant was obtained about41.01-44.96 ˚C

Pengaruh Beban Pendinginan terhadap Temperatur Sistem Residential Air Conditioning Hibrida dengan Kondensor Dummy Tipe Trombone Coil Menggunakan Refrigeran Hidrokarbon

An experimental study in the hybrid air conditioning machine as air conditioner and water heater by retrofitting R-22 with hydrocarbon refrigerant (HCR-22) have been investigated. Drop-in experiments were carried out without any modification on the system. The system has been tested by varying the internal heat load 0, 1000, 2000, and 3000 W for residential cooling load simulation. The measurements taken during two hour experimental periods at 5 minutes interval times for temperature set point of 19°C. Temperature of the system is the objective of this research. The result shows refrigerant temperature of HCR-22 lower than R-22 because differences of compressor discharge pressure. Temperature discharge decrease between 16.22-24.02 ˚C. For conditioned room, room temperature in every internal heat load was relative same. And water temperature in 50 L storage are 46.58-48.81 ˚C

Kaji Eksperimental Alat Pengering Tenaga Surya Aktif Pemanasan Langsung (Direct Solar Dryer Active) Berbentuk Jajar Genjang Tipe Kabinet

The direct solar drying model of the parallelogram cabinet type is a dryer of parallelogram shaped, which is intended to produce a uniform temperature distribution, so that the drying results can be uniformly and faster. This research aims to conduct an experimental study of direct solar drying, type of cabinet parallelogram shaped. The dried material was bananas, a drying capacity of 8 kg. Data obtained from this research was the temperature, radiation intensity, and mass reduction in bananas. Based on the data obtained, the average temperature in the drying chamber was 35.18ºC to 59.56ºC. The highest temperature of 62ºC occurred in racks 8 and the lowest temperature of 34ºC occurred in rack 1. The highest mass reduction was 0.301 kg occurred in racks 8 and the lowest mass reduction was 0.237 kg occurred in the first rack. Based on data, the higher of temperature, the mass reduction in the banana would be faster