Stirling engine micro-CHP This technology is new to the market, although the principal of the Stirling engine is well established. The electrical output is small relative to the heat output (about 6:1) but this is not necessarily a problem for micro-CHP.
Kidney pain is caused by infection, inflammation, injury or enlargement of the kidney, or by conditions that block the flow of urine out of the kidney. Pyelonephritis (kidney infection) and kidney stones are the most common causes of kidney pain. Pyelonephritis is often accompanied by other symptoms of urinary tract infection, such as burning with urination, frequent or urgent need to urinate, bloody urine, fever, and nausea with or without vomiting.
Back pain could be a sign of a kidney infection. Lower back pain can be debilitating. Finding the root cause of it can be nearly as frustrating. Part of the reason is the complexity of the human muscular-skeletal system, and the fact that so many stresses from our erect posture can come home to roost in our lower backs.