地源热泵分析

简述了地源热泵技术的原理及系统组成，从自然资源的利用、对环境的影响、经济性三方面将地源热泵与传统空调作了对比分析，表明地源热泵系统具有节能、环保、经济的优势。     

阻力分布式变频供热系统设计方法分析

叙述了阻力分布式供热系统应用的意义,分析了传统供热系统耗能的原因,对比了其与阻力分布式供热系统设计方法的异同,给出了阻力分布式供热系统的设计方法。得出阻力分布式变频供热系统节能效果显著的结论。     

太原地区用太阳能制冷及供暖综合系统的探讨

针对电力紧张、能源短缺的问题,提出了在太原地区利用太阳能吸收式制冷和太阳能地板辐射供暖综合系统的模式,介绍了该系统的工作原理,并列举了实际算例对太阳能的使用情况进行了说明,同时提出了有待进一步研究的问题,以达到节能环保的目的。     

平衡阀流量测量的几个问题

针对平衡阀的使用情况 ,就平衡阀的流量测量原理及其影响因素作了详细阐述 ,提出了平衡阀的选择原则 ,并指出平衡阀测量的流量缺乏科学依据     

煤矿工人安全培训新模式的探索

安全问题已成为制约煤炭工业发展的突出问题之一。对煤矿职工安全技术素质的要求也越来越高,安全培训工作显得尤为重要。文章根据这种现状提出一种新型的安全培训模式,通过学习本的使用,提高职工的安全技术素质,确保实现安全生产。     

应用于生物传感的光子晶体微腔设计

We have designed an air-bridged PhC microcavity with high sensitivity and a high quality factor.The structure parameters of the microcavity are optimized by three-dimensional finite-difference time-domain method. We compare the performance of a silicon-on-insulator PhC microcavity and an air-bridged PhC microcavity,and analyze the effect of the thickness of the slab and the radius of the defect hole on the performance of the air-bridged PhC microcavity.For a thinner slab and a larger defect hole,the sens...     

空调冷冻水系统压差调节阀的选择计算

就空调冷冻水系统中压差调节阀的重要性及其调节原理进行了分析，并对其选型计算进行了详细阐述，总结出一些结论和选择计算时应注意的问题。     

A novel structure of silicon-on-insulator microring biosensor based on Young's two-slit interference and its simulation

A novel silicon-on-insulator microring biosensor based on Young’s twoslit interference has been demonstrated. The transducer signal from electric field intensity distribution on the interference screen is given by using the transfer matrix method(TMM) and two-slit interference principle.The result shows that the structure we propose is advantageous for sensing as the interference pattern is very sensitive to the ambient refractive index around the microring.A small perturbation in refractive index around the microring△n_c will result in a notable shift of destructive interference points(DIPs) on the interference screen.By detecting the shift of the DIPs,the ambient refractive index change can be obtained.     

利用水源热泵吸收热电厂冷凝热——国阳新能集中供热工程案例

为解决火力发电厂冷凝热排向大气造成能量浪费的问题,国阳新能集中供热工程利用大型高温水源热泵回收热电厂冷凝热进行供热。介绍了热电厂冷凝热的特点和该工程的设计方案。分析表明,该方案能提高热电厂热效率,产生可观的经济效益、环境效益和社会效益,实现节能减排。     

Design of a photonic crystal microcavity for biosensing

We have designed an air-bridged PhC microcavity with high sensitivity and a high quality factor.The structure parameters of the microcavity are optimized by three-dimensional finite-difference time-domain method. We compare the performance of a silicon-on-insulator PhC microcavity and an air-bridged PhC microcavity,and analyze the effect of the thickness of the slab and the radius of the defect hole on the performance of the air-bridged PhC microcavity.For a thinner slab and a larger defect hole,the sensitivity is higher while the quality factor is lower.For the air-bridged photonic crystal slab,the sensitivity can reach 320-nm/RIU(refractive index unit) while the quality factor keeps a relatively high value of 120 by selecting the proper slab thickness and the defect hole radius,respectively,when the refractive index is 1.33.This is meaningful for low-detection-limit biosensing.