Energy Analysis of a Complementary Heating System Combining Solar Energy and Coal for a Rural Residential Building in Northwest China

<table class="fixed-width table-group" id="tab1"><tr><td><table class="table"><colgroup><col style="width:9.97em"/><col style="width:12.72em"/><col style="width:7.01em"/><col style="width:5.00em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Measured parameters</td><td class="align_center">Measuring instruments</td><td class="align_center">Range</td><td class="align_center">Precision</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Temperature</td><td class="align_center">Pt-100 temperature sensor</td><td class="align_center">−50<svg height="5.65839pt" id="M1" style="vertical-align:-0.04980993pt" version="1.1" viewbox="-0.0498162 -5.60858 7.75925 5.65839" width="7.75925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M548 311L516 323C497 274 452 240 400 240C372 240 342 260 316 278C277 305 235 330 188 330C116 330 66 268 40 199L72 187C91 236 136 270 188 270C216 270 246 250 272 232C311 205 353 180 400 180C472 180 522 242 548 311Z" id="g117-131"></path></g></svg>100°C</td><td class="align_center">±0.1°C</td></tr><tr><td class="align_left">Flow rate for building</td><td class="align_center">LWGY-20 turbine flowmeter</td><td class="align_center">0.7<svg height="5.65839pt" id="M2" style="vertical-align:-0.04980993pt" version="1.1" viewbox="-0.0498162 -5.60858 7.75925 5.65839" width="7.75925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M548 311L516 323C497 274 452 240 400 240C372 240 342 260 316 278C277 305 235 330 188 330C116 330 66 268 40 199L72 187C91 236 136 270 188 270C216 270 246 250 272 232C311 205 353 180 400 180C472 180 522 242 548 311Z" id="g117-131"></path></g></svg>7.0 m<sup>3</sup>/h</td><td class="align_center">±0.45%</td></tr><tr><td class="align_left">Flow rate for digester</td><td class="align_center">LWGY-15 turbine flowmeter</td><td class="align_center">0.4<svg height="5.65839pt" id="M3" style="vertical-align:-0.04980993pt" version="1.1" viewbox="-0.0498162 -5.60858 7.75925 5.65839" width="7.75925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M548 311L516 323C497 274 452 240 400 240C372 240 342 260 316 278C277 305 235 330 188 330C116 330 66 268 40 199L72 187C91 236 136 270 188 270C216 270 246 250 272 232C311 205 353 180 400 180C472 180 522 242 548 311Z" id="g117-131"></path></g></svg>4.0 m<sup>3</sup>/h</td><td class="align_center">±0.45%</td></tr><tr><td class="align_left">Solar radiation</td><td class="align_center">TBQ-2 pyranometer</td><td class="align_center">0<svg height="5.65839pt" id="M4" style="vertical-align:-0.04980993pt" version="1.1" viewbox="-0.0498162 -5.60858 7.75925 5.65839" width="7.75925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M548 311L516 323C497 274 452 240 400 240C372 240 342 260 316 278C277 305 235 330 188 330C116 330 66 268 40 199L72 187C91 236 136 270 188 270C216 270 246 250 272 232C311 205 353 180 400 180C472 180 522 242 548 311Z" id="g117-131"></path></g></svg>2000 W/m<sup>2</sup></td><td class="align_center">±2%</td></tr><tr><td class="align_left">Coals weight</td><td class="align_center">Platform balance</td><td class="align_center">-</td><td class="align_center">±0.2 kg</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The detailed parameters of instruments.</div>

BioMed Research International

tab1

Table 1

Table 1: Energy Analysis of a Complementary Heating System Combining Solar Energy and Coal for a Rural Residential Building in Northwest China 