Nowadays heat pump water heater becomes a very hot topic in hot water industry. However it still has many problems such as higher condensing temperature, large-scale operation conditions and lower COP in cold regions. Based on these problems, the paper presents a prototype assembled with a two-stage rotary compressor which can be used in cold regions. The working principle and the basic feature...

Solar thermal water heating systems reduce household energy bills by using the free solar radiation provided by the sun to heat water for residential needs. In order to eliminate the need for electricity to run a pump to drive the fluid circulation in these systems, fluid buoyancy effects can be employed to move the fluid from lower elevations to higher elevations. There are several operational...

1. Introductory Remarks 2. Evaporation Processes 3. Multi-stage Flash Desalination Process 4. Seawater Supply System 5. Seawater Recirculation System 6. Feed Water System 7. Brine Blowdown System 8. Vacuum Raising and Maintaining System 9. Brine Recirculation System 10. Anti-scale Dosing System 11. Condensate Flow from Brine Heater System 12. Distillate System 13. Plant Loading Glossary Bibliog...

Influence of a vent hood at the exit of exhaust flue gas and flue baffles in the firetube on the temperature and flow fields of a gas tank water heater, as well as thestructure and amount of heat transferred to the water tank has been studiednumerically using two-dimensional steady state finite element simulation.Observations show that without a vent hood, there is a downward gas flow in theflu...

This article presents a laser strobe microscopy method for photographing fast transient microscale processes. The technique is illustrated by capturing time-lapsed images of bubble nucleation from pulse-heated thin films immersed in a pool of water. The method combines a pulsed laser for the light source and a microscope with 100 magnification of a heater element platinum film, 30 m long, 15 m ...

With the rapid growth of thermostatically controlled loads, active power fluctuation and peak demand growth within an autonomous micro-grid become serious problems. This paper tries to suppress power fluctuation and shave peak demand for a micro-grid through optimizing domestic electric water heaters (controllable load). In this paper, domestic electric water heater models are first built to op...

We present the case report of a 13-month-old Caucasian toddler with symptoms of loss of consciousness, central cyanosis and uncontrolled movements of the upper limbs while taking a warm bath. The diagnosis of hot water epilepsy was supported by an ictal EEG. Hot water epilepsy, also known as bathing epilepsy or water-immersion epilepsy is, in the Caucasian population, a rare form of benign epil...

A stable meniscus is formed by a circular nozzle dispensing water over a heated circular face of a rotating cylindrical copper block. The nozzle is offset from the axis of rotation of the copper block and thus a moving meniscus is formed on the surface. The water flow rate, heater surface temperature, and the speed of rotation are controlled to provide a stable meniscus with continuous evaporat...