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Vacuum freeze-dryer has been widely used in many fields such as food, medicine, and beverage. In the actual operation process, the freeze-dryer and factory buildings need to consume a lot of cold energy. In order to reduce energy consumption, this paper presents a freeze-dryer system using solar energy absorption refrigeration in conjunction with buildings. Through the solar absorption refrigeration system, the cooling capacity is supplied to the freeze-dryer and the building at the same time, so that the cold can be cascaded utilization. The simulation of the system by TRNSYS software shows that the system can greatly reduce the consumption of conventional energy, and it is a new energy-saving measure of vacuum freeze-dryer and building air conditioning. [ABSTRACT FROM AUTHOR]

A dome-covered house can be considered as a sustainable building design example. It mimicks the optimal forms in the nature, and can help achieve reduction on the house heating energy need in cold winter. When the dome is made of electrochromic glazing, it can prevent large amount of solar energy from passing into the interior of the dome to prevent over-heating in summer. In this paper, a three-dimensional solar energy, thermal and air flow model is presented. The impact of different glazing types on the thermal environment inside the dome in summer and house heating load in winter is investigated. The use of electrochromic/low transmissivity glazing can result in the reduction of the absorption of solar radiation by the ground for up to 88.9%, as compared to the normal glazing and help to reduce the highest air temperature inside the dome from 41.8 °C to as low as 25.6 °C at 1:00 PM on July 21st in Montreal at 45°N latitude, southern part of Canada, and from 34.6 °C to 20.6 °C in Yellowknife at 62.5°N latitude, northern part of Canada, under different control strategies, thus can create a comfortable thermal environment inside the dome. [ABSTRACT FROM AUTHOR]

This article focuses on the implementation of energy efficiency measures in a semiconductor building. Those measures include system optimization on the terminal units (TBs), office air-handling units (AHUs), make-up air units (MAUs), exhaust systems, fan filter units (FFUs), fan tower units (FTUs) and recirculation air-handling units (RAHs), fan coil units, and central chiller plant and boiler plant. Twelve permanent power meters were installed throughout the building to measure the total building electricity demand, solar generated electricity demand, HVAC and non-HVAC equipment demand to quantify the energy savings from the implementation of the energy efficiency measures. The electricity demand data have been collected for two years at 15-minute intervals and evaluated, with the energy saving adjusted by the outside air temperature. The electricity saving for this building is about 54.49 kWh/ft2/year (589.64 kWh/m2/year), which reduces the total building electricity consumption about 20%. The gas savings is about 0.1MMBtu/ft2/year (493 km3 of natural gas/year, 30% of the total building gas consumption) based on the daily reading from the facility engineer. The simple payback without incentives is 1.5 years. [ABSTRACT FROM PUBLISHER]

To design a lyophilizer plant in Guangzhou, the author of this paper used a solar energy absorption refrigeration system and a waste heat of solar absorption refrigeration system. Using Trnsys software, the simulation results show that the solar assurance rate of 74.96% on July 28th can save coal quantity of about 236.8 kg, a solar assurance rate of 53.48% in July can save coal quantity of about 4790.9 kg, and an annual solar assurance rate of 39.06% can save about 40657.1 kg, and each have good environmental benefits. [ABSTRACT FROM AUTHOR]

Abstract: A dome-covered house is an example of designing sustainable buildings by learning from the optimized biological forms from the nature. The paper presents a 3-D thermal and air flow (3D-TAF) model that estimates the energy needs of a dome-covered house. The model is verified with CFD simulations under the COMSOL Multiphysics environment, experimental measurements and simulation results from similar structures published by other researchers. The use of the dome is expected to reduce the annual heating load of the house by 62.6%, compared with that of an isolated house located in Montreal at latitude. [Copyright &y& Elsevier]