Energy Education Science and Technology Part A: Energy Science and Research 2012 Volume (issues) 29(2): 913-946 Passive cooling methods for energy efficient buildings with and without thermal energy storage – A review N. B. Geetha‚ R. Velraj* Anna University‚ Institute for Energy Studies‚ College of Engineering‚ Chennai‚ India. Contents 1. Introduction ……………………………………………………………………..914-915 2. Solar and heat protection techniques (Reduce heat gains)……………………...915-919 2.1. Microclimate………………………………………………………………
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is to compensate for other thermal loads so that the cabin temperature remains within the acceptable comfort range. In cold weather conditions‚ positive AC load (heating) is required for the cabin. Inversely‚ in warm conditions‚ negative AC load (cooling) is needed for maintaining the comfort conditions. The actual load created by the AC system depends on the system parameters and working conditions. In this work‚ it is assumed that an AC (or heat pump) cycle is providing the thermal load calculated
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Techniques of Waste Heat Recovery Waste heat recovery is being more used more and more often today as it is becoming more effective‚ due to increasing energy prices‚ technological developments and a decrease in equipment costs. Heat recovery can be classified into three main strategies: recycling energy back into the process‚ recovering the energy for other onsite use and using it to generate electricity in combined heat and power systems. Once the system has been made as efficient as possible before
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” said Kathy Loftus‚ global leader of Sustainable Engineering and Energy Management for Whole Foods Market. They are cheaper and food loss was cut by 1% because of the better cooling performance of its cases using the new system. If people cannot afford CO2 utilized refrigerators‚ there are natural ways of passive cooling. By just using a PVC (polyvinyl chloride) shelf unit and burlap bags‚ a huge amount of electricity can be saved. These materials are inexpensive and are widely available in local
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Recovering SUSTAINABLE Water from Wastewater AUDREY D. LEVINE UNIVERSITY OF SOUTH FLORIDA‚ TAMPA TA K A S H I A S A N O UNIVERSITY OF CALIFORNIA‚ DAVIS Society no longer has the F luxury of using or water supplies to be sustainable‚ water only once. the rate at which water is withdrawn from water sources needs to be in balance with the rate of renewal or replenishment. At the same time‚ water quality must also be sustainable or recoverable. In nature‚ precipitation replenishes surface water
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GLOBAL CLIMATE CHANGE AND ITS IMPACT - Harshit Sharma 12th C Identifiable change in the climate of Earth as a whole that lasts for an extended period of time (decades or longer) is referred as climate change. When due to natural processes‚ it is usually referred to as global climate variability. Usually refers to changes forced by human activities that change the atmosphere. Climate change is a long-term shift in weather conditions identified by changes in temperature‚ precipitation‚ winds
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temperature difference)‚ the "heat pump" is named by analogy. A heat pump always moves thermal energy in the opposite direction from temperature‚ but a heat pump that maintains a thermally conditioned-space can be used to provide either heating or cooling‚ depending upon whether the environment is cooler or warmer than the conditioned-space. When pumps are used to provide heating‚ they are used because less input from a commercial-energy source is required than is required for newly-creating thermal
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Preparation and Ferroelectric Characterization of Calcium doped Barium Titanate ceramics ABSTRACT Barium Titanate (BT) is widely used in electro-optical and electroceramic industry because of its ferroelectric‚ thermoelectric and piezoelectric properties when it assumes the tetragonal structure. In addition to its Lead free composition‚ its perovskite structure allows variation of ionic size and small displacement of atoms that lead to the distortion of the structure which has a profound
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THERMAL DETECTORS INSTRUMENTATION AND CONTROL ENGINEERING MODULE 1 INTRODUCTION • Temperature – Is a measure of the kinetic energy of the material in question • Kinetic energy is a measure of the activity of the atoms of any material – The measure of the speed of an atom or molecules which they move. – expressed in terms of any of several arbitrary scales‚ such as Fahrenheit‚ Celsius‚ or Kelvin Measuring Device • Thermal Detectors – An instrument or device which quantifies temperature
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cycles‚ various components of steam power plantlayoutpulverized coal burners- Fluidized bed combustion-coal handling systemsash handling systems- Forced draft and induced draft fans- Boilers-feed pumpssuper heaterregenerator-condenser- dearearators-cooling tower 2 HYDRO ELECTRIC POWER PLANTS Layout-dams-selection of water turbines-types-pumped storage hydel plants 3 NUCLEAR POWER PLANTS Principles of nuclear energy- Fission reactions-nuclear reactor-nuclear power plants 4 GAS AND DIESEL POWER
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