نتایج جستجو برای: water heaters
تعداد نتایج: 551677 فیلتر نتایج به سال:
Pool boiling heat transfer measurements from different heater sizes were obtained in low-g (0.01± 0.025 g) and high-g (1.7 ± 0.5 g) aboard the KC-135 aircraft. Boiling on three heaters of different size (0.65, 2.62, 7.29 mm) was studied. Control circuitry was used to maintain an isothermal boundary condition on the heater surface while the power dissipated by the heater was measured. Steadystat...
Pool boiling heat transfer measurements using heaters of varying aspect ratio were obtained in low-g (0.01 g ± 0.025 g) aboard the KC-135 aircraft. The heater aspect ratio was varied by selectively powering 2 · 2, 2 · 4, 2 · 6, 2 · 8, and 2 · 10 arrays of heaters in a 10 · 10 heater array containing individual heaters 0.7 · 0.7 mm in size. Electronic control circuitry was used to maintain an is...
The issue of freezing often occurs when using all-glass vacuum tube solar water heaters during cold winter seasons, leading to problems such as pipe ruptures and tank leakage. In order further study the nocturnal heat dissipation characteristics these heaters, a three-dimensional transient numerical model their was established. simulated process, experimental validations were conducted through ...
The performance of an air-source heat pump water-heater (ASHPWH) system manufactured by Kronoterm was benchmarked in this study for the application dairy farming Ireland. COP calculated to be 2.27 under normal operating conditions. device able supply water at 80 °C, however a full tank temperature not achieved or deemed necessary application. Litres per kWh used as metric and usable unit energy...
Greenhouse gas (GHG) emissions have significantly increased in recent years as a result of population rise and the increase number residences, with high levels energy use homes household appliances. It is crucial to move housing industry away from high-carbon sources toward low-carbon order minimize greenhouse precaution. One most systems that needs be provided achieve efficiency electric water...
We report disparate quasiballistic heat conduction trends for periodic nanoscale line heaters deposited on a substrate, depending upon whether measurements are based on the peak temperature of the heaters or the temperature difference between the peak and the valley of two neighboring heaters. The degree of quasiballistic transport is characterized by the effective thermal conductivities of the...
BACKGROUND There are long-standing concerns about adverse effects of gas appliances on respiratory health. However, the potential adverse effect of low-NOx (nitrogen oxide) unflued gas heaters on children's health has not been assessed. OBJECTIVES Our goal was to compare the respiratory health effects and air quality consequences of exposure to low-NOx unflued gas heaters with exposure to non...
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