{"product_id":"kanalinis-vandens-sildytuvas-nkv-250-4-19-kw-4-eiles","title":"Kanalinis vandens šildytuvas NKV 250-4, 19 kW, 4 eilės","description":"\u003ch2\u003eTrumpai apie prekę\u003c\/h2\u003e\u003cp\u003ePrekė: Kanalinis vandens šildytuvas NKV 250-4, 19 kW, 4 eilės. Kategorija: Oro šildytuvai.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGamintojas:\u003c\/strong\u003e Vents\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModelis:\u003c\/strong\u003e NKV250-4 fi 250 mm - 4 rzędowa\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaximum power 19kW, number of pipe rows: 4.\u003c\/h2\u003e\u003ch2\u003eTECHNICAL DATA:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003emade of galvanized steel,\u003c\/li\u003e\n\u003cli\u003enumber of pipe rows: 4,\u003c\/li\u003e\n\u003cli\u003econnection diameter Ø250,\u003c\/li\u003e\n\u003cli\u003efor supply ventilation systems,\u003c\/li\u003e\n\u003cli\u003efor heating or heating the air in ventilation duct systems,\u003c\/li\u003e\n\u003cli\u003efor connection with round channels,\u003c\/li\u003e\n\u003cli\u003eheating elements made of copper pipes with aluminum ribs,\u003c\/li\u003e\n\u003cli\u003epermissible operating pressure of 1.6 MPa (16 bar) at a water temperature of 100°C,\u003c\/li\u003e\n\u003cli\u003eoptionally possible connection of a freezing protection sensor (G 1\/4\").\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\u003cp\u003eDuct water heaters designed to heat supply air in ventilation systems with round cross-sections.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eA -\u003c\/b\u003e Air temperature after using the heater\u003c\/p\u003e\u003cp\u003e\u003cb\u003eB -\u003c\/b\u003e Speed of air flowing through the heater\u003c\/p\u003e\u003cp\u003e\u003cb\u003eC -\u003c\/b\u003e Efficiency of air flowing through the heater\u003c\/p\u003e\u003cp\u003e\u003cb\u003eD -\u003c\/b\u003e External air temperature\u003c\/p\u003e\u003cp\u003e\u003cb\u003eE -\u003c\/b\u003e Efficiency of water flowing through the heater\u003c\/p\u003e\u003cp\u003e\u003cb\u003eF -\u003c\/b\u003e Water pressure drop\u003c\/p\u003e\u003cp\u003e\u003cb\u003eG -\u003c\/b\u003e Heater power\u003c\/p\u003e\u003cp\u003e\u003cb\u003eExample of calculating water parameters of a heater:\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eFor a capacity of 1000 m3\/h, the air velocity in the heater section is 3,4 m\/s (1).\u003c\/p\u003e\u003cp\u003eTo find the temperature to which air heating is possible, it is necessary from the intersection of performance (1) with the calculation line of winter temperature (falling blue line e.g. -20ºC) run a left line (2) to the intersection with a drop in water temperature (e.g. 70\/50) and guide perpendicular from the air temperature axis after passing through the heater (28ºC) (3).\u003c\/p\u003e\u003cp\u003eTherefore, to determine the power of the heater you need from the intersection of performance (1) with the calculation line of winter temperature (rising red line e.g. -20ºC) run a line (4) to the right to cut with a drop in water temperature (e.g. 70\/50) and guide perpendicular to the power axis of the heater (19,0 kW) (5).\u003c\/p\u003e\u003cp\u003eTo determine the necessary performance of the heater, you need to leave the perpendicular (6) per line of water flowing through the heater (0,23 l\/s).\u003c\/p\u003e\u003cp\u003eTo determine the drop in water pressure in the heater, it is necessary to find the intersection point of the line (6) with the pressure loss chart and carry out to the right perpendicular (7) on the axis of water pressure drop (17,0 kPa).\u003c\/p\u003e\u003cp\u003e\u003cb\u003eConnection in the opposite direction to the air stream.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eConnecting in the same direction as the air stream.\u003c\/b\u003e\u003c\/p\u003e\u003ch2\u003eDIMENSIONS\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eØD - \u003c\/b\u003e248mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eB-\u003c\/b\u003e 470mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eH -\u003c\/b\u003e 350mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eH3 - \u003c\/b\u003e270mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eL -\u003c\/b\u003e 350mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eL1 - \u003c\/b\u003e28mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eL2 - \u003c\/b\u003e65mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eL3 - \u003c\/b\u003e270mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eK -\u003c\/b\u003e G 1''\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGroup\u003c\/th\u003e\n\u003cth\u003eName\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003enew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eInvoice\u003c\/td\u003e\n\u003ctd\u003eWith VAT invoice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eVents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003ewater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eHeating power\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eNKV250-4 fi 250 mm - 4 rzędowa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eProduct weight with unit packaging\u003c\/td\u003e\n\u003ctd\u003e10.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eManufacturer code\u003c\/td\u003e\n\u003ctd\u003eNKV 250-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eEnergy efficiency class\u003c\/td\u003e\n\u003ctd\u003ebrak klasy energetycznej\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParametry\u003c\/td\u003e\n\u003ctd\u003eRange of energy efficiency classes\u003c\/td\u003e\n\u003ctd\u003eno energy class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Dom-Went","offers":[{"title":"Default Title","offer_id":53597724246363,"sku":"6695757534","price":491.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/9355\/4523\/files\/CHANNEL-WATER-HEATER-NKV-250-4-ROWS-19kW.jpg?v=1784103879","url":"https:\/\/homy.lt\/products\/kanalinis-vandens-sildytuvas-nkv-250-4-19-kw-4-eiles","provider":"homy.lt","version":"1.0","type":"link"}