electrical mechanical engineering

I t wasn't such a long time ago that sleep was considered an activity for wimps. Life's too short, they said in the power-crazed Eighties. "Sleep when you're dead!" Today that just seems ignorant. For our brains, beauty and overall brilliance, there is no substitute for a good night's sleep, and approximately one third of a life well lived should be spent tucked up in bed. But just as everybody has wildly different dreams, we all have different hopes for our beds. Like houses, you get what you pay for. The Sleep Council recommends that you spend as much as cordless you can afford. So what – when money is no object – does that mean you're going to get? A visit to some of the best bed makers in Britain is an education in the science of sleep. It goes without saying that posture, ie your comfort, and temperature are essentials in guaranteeing a good night's sleep, and the quality of a bed will ultimately come down to the materials used to make it. The ...

THE Border Counties have become famous as the spawning grounds for some of the most successful and controversial Irish businessmen, ranging from Sean Quinn to Larry Goodman to Eddie Haughey to Martin Naughton.Less well known is the reclusive Cavan businessman Brendan Murtagh, who is believed to have an open position of up to £4m for playing the stock market in Tullow Oil and other shares. Any loss on Tullow or other shares should be quite easy to collect by Tom Kavanagh, liquidator to MMI Stockbrokers. Mr 3v Murtagh has quickly indicated that funds were available to meet any demand from the MMI liquidator. The co-founder with his brother Eugene of building materials company Kingspan (then named Kingscourt) over 25 years ago, Brendan has ample resources to meet such a minor inconvenience as a loss on Tullow's poorly-performing shares.At the last count Brendan Murtagh, who turns 53 this year, had almost 19m shares in publicly-quoted Kingspan, a company which, as the Financial Times ...

This paper contains a review of the latest research activities toward transcritical C[O.sub.2] cycle technology as a replacement for the fluorocarbon-based vapor-compression technology for heat pumping, air-conditioning, and refrigeration applications. In addition, the potential of using the transcritical C[O. sub. 2] cycle technology for particular applications and the barriers that must be overcome before its acceptance are reviewed. Advances in theory and recent experimental data are also included. INTRODUCTION In the early twentieth century, carbon dioxide (C[O. sub. 2]) was extensively used as the refrigerant for vapor-compression refrigeration systems, especially in marine systems, due to its nonflammability and acceptable toxicity. However, C[O.sub.2] has unfavorable characteristics of lower critical temperature and higher operating pressure compared to ammonia ([NH.sub.3]) and sulfur dioxide ([SO.sub.2]). After the advent of chlorofluorocarbons (CFCs) in 1928, the use and i...

This paper contains a review of the latest research activities toward transcritical C[O.sub.2] cycle technology as a replacement for the fluorocarbon-based vapor-compression technology for heat pumping, air-conditioning, and refrigeration applications. In addition, the potential of using the transcritical C[O. sub. 2] cycle technology for particular applications and the barriers that must be overcome before its acceptance are reviewed. Advances in theory and recent experimental data are also included. INTRODUCTION In the early twentieth century, carbon dioxide (C[O. sub. 2]) was extensively used as the refrigerant for vapor-compression refrigeration systems, especially in marine systems, due to its nonflammability and acceptable toxicity. However, C[O.sub.2] has unfavorable characteristics of lower critical temperature and higher operating pressure compared to ammonia ([NH.sub.3]) and sulfur dioxide ([SO.sub.2]). After the advent of chlorofluorocarbons (CFCs) in 1928, the use and i...