Astro Findings
Repair is one of those words that have a complex etymology which spans many cultures and produces many related words.
The word is compounded from re “again” and parare meaning “make ready” or “prepare” The use of repair as a noun is first seen around 1595.
Of interest is the relationship between parare and the word pare, which also derives from parare. The modern word pare means to trim by cutting close, and was first seen around 1320. This word likewise derives from parare.
Etymologists note that the Latin word parare is related to the Latin word parere. Examination of the roots of the Latin word parere, are even more helpful in understanding the truly ancient history of the word repair. Parere means to produce, bring forth or give birth to, and is said to originate in the Prote-European word “per” meaning to bring forward or bring forth. Parere is also related to the Lithuanian word apriu meaning “to brood” and to the Gk word “poris’ calf or bull, the Old High German word farr, and the German word farre meaning bullock. And the Old English world fearr, meaning bull, and the Sanskrit word prthukah, meaning child calf young of an animal, and the Czech word spratek meaning brat urchin or premature calf. The exact connection between birth or bringing forth and the bull is not clear, other than the fact that a bull is a symbol of fertility in many ancient cultures.
In this particular line of derivation, we see an ancient connection to Semitic languages in which parrah means a cow, and the related word peru means to give birth. We can see a definite association to the modern English word partuous, meaning fertile.
Thanks to A-1 Plumbing of Baltimore for sponsoring this report. A-1 is a Baltimoire plumbing company company that specializes in plumbing repairs of all kinds.
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Posted in Repairing · January 16th, 2010 · Comments (0)
Many homes still use central heating based on hot water or steam circulation. The life and health of these systems is related to proper set up of the pipes, the pump, the boiler, and other components of the circulation. Because they are installed less and less, fewer technicians have expertise in diagnosing and repairing the problems of the older hot water based systems when they goes bad.
Since water expands when it heats up, the system must have a way of handling the expansion so it won’t damage the piping or cause an explosion. Older heating systems use an expansion tank usually set up in the attic. As the water in the system cools, the water in the expansion tank lowers. As the water heats up, the level in the expansion tank rises, and pressure can be blow out through the expansion tank tube which rises from the top of the tank. A ball and cock system maintains the minimal water level in the tank. If this fails, the tank can empty of water, and the radiators will turn cold.
Morst modern hot water systems buffer the increased pressure from the heated water within, through an “expansion vessel,” a “safety blow-off valve, filling loop,” a “pressure gauge,” and a “safety valve on the boiler.
Older heater circulation systems use a one pipe system. Hot water from the central boiler flows through the pipe from radiator to radiator. The last radiator in the circuit will therefore run much cooler than the first radiator. Modern systems use a two pipe system. Each radiator gets it’s own supply of hot water directly from the central boiler. 22mm pipes are used for the main flow, and flow to 3 radiators or less can travel through a 15mm pipe. Micro systems are fitted with pipes of 8mm or less, however they can clog easily.
Pump placement is crucial to maintenance of older water heating system. If the pump was improperly placed, then it will draw air into the circulation , from the expansion tank. The oxygenated water will cause rusting and corrosion and blockage as well as radiator leaks. Over the years, radiators will have to be replaced more than in other better designed setups. The blockages are found especially where the cold water feeds into the system.
Other problems can arise in older systems, based on the placement of the peripheral pipes. The ideal pipe placement is for a vertical rise and fall of the hot water. In floors where there are multiple radiators, the horizontal connecting pipes should be exactly level. If they rise to much, than air will be trapped in the bend and block flow. If they fall too much, cold water will settle in the low points, impeding flow.
So while the older systems are long lasting and durable, they do develop problems, and it is important to find someone who knows how to fix them. A-1 Plumbing of Baltimore is a Baltimore plumbing company that does hot water heating systems. If you are having a problem with your hot water heat and live in the Metro Baltimore area than please contact A-1 Plumbing.
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Posted in Repairing · December 9th, 2009 · Comments (0)