A refrigerator (colloquially fridge) consists of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. Refrigeration is an essential food storage technique in developed countries. The lower temperature lowers the reproduction rate of bacteria, so the refrigerator reduces the rate of spoilage. A refrigerator maintains a temperature a few degrees above the freezing point of water. Optimum temperature range for perishable food storage is 3 to 5 °C (37 to 41 °F). A similar device that maintains a temperature below the freezing point of water is called a freezer. The refrigerator replaced the icebox, which had been a common household appliance for almost a century and a half.
The first cooling systems for food involved ice. Artificial refrigeration began in the mid-1750s, and developed in the early 1800s. In 1834, the first working vapor-compression refrigeration system was built. The first commercial ice-making machine was invented in 1854. In 1913, refrigerators for home use were invented. In 1923 Frigidaire introduced the first self-contained unit. The introduction of Freon in the 1920s expanded the refrigerator market during the 1930s. Home freezers as separate compartments (larger than necessary just for ice cubes) were introduced in 1940. Frozen foods, previously a luxury item, became commonplace.
Freezer units are used in households as well as in industry and commerce. Commercial refrigerator and freezer units were in use for almost 40 years prior to the common home models. The freezer-over-refrigerator style had been the basic style since the 1940s, until modern, side-by-side refrigerators broke the trend. A vapor compression cycle is used in most household refrigerators, refrigerator–freezers and freezers. Newer refrigerators may include automatic defrosting, chilled water, and ice from a dispenser in the door.
Domestic refrigerators and freezers for food storage are made in a range of sizes. Among the smallest are Peltier-type refrigerators designed to chill beverages. A large domestic refrigerator stands as tall as a person and may be about 1 m wide with a capacity of 600 L. Refrigerators and freezers may be free-standing, or built into a kitchen. The refrigerator allows the modern household to keep food fresh for longer than before. Freezers allow people to buy food in bulk and eat it at leisure, and bulk purchases save money.
naomba kuuliza wakuu nmenunua fridge hisense rd 20 lakn naona mbele kwenye milango kuna rangi ya silver na pembeni kuna rangi flani ya kqma kijivu flan je ndo yanakuag hvo au nimepgwa hapa wakuu
Kwa yeyote mwenye kuhitaji Fridge yenye nafasi kubwa ya kuweka vitu na uwezo mkubwa wa kuhifadhi vitu kwa matumizi nafuu ya umeme basi anitafute kupitia namba hii
0673 17 5000
Bei yake ni Tsh 850,000
Napatikana Kigamboni
Dar es Salaam
Iko hivi mi nafanya kazi shirika fulan , huwa tunazurura mikoa mingi , kila mkoa huwa tunakaa at least miez sita .
Kwa sasa tupo DSM , nimechukua chumba mitaa ya KAM college Kimara korogwe, nikanunua baadhi ya vtu vya ndani kama TV hisense smart inch 43, Fridge Aborder 128Liters na Radio Boss...
Wakuu nina mzigo wa fridges nzuri sana za boss hapa, nautoa nataka uishe chap sana ili nilete mzigo mwingine, hivyo basi nimeweka punguzo kubwa sana la bei.
Ukinunua kwetu unapata Usafiri bure, Pasi ya umeme bure, Jagi la umeme, stand ya fridge bure kabisa.
NB: Malipo ni baada ya delivery...
Habari ya leo ndugu waTanzania na wote msomao mada hii. Hope you are good with your life.
Leo napenda niwape ushuhuda wa maisha yangu jinsi fridge lilivyo badilisha maisha yangu na kuongeza ufanisi wangu wa kupiga show kunako majambo.
Mimi nimepanga geto, sina mke, ila katika kuhakikisha...
habari nauza fridge lita 109 bado mpyaa imetumika kidogo haimjui fundi hautajutia inapatikana manzese dar es salaam fridge sio kubwa sana ni futi 4 urefu bei 350000
sold sold sold sold
Wataalam, huu weusi kwenye kifaa hiki cha fridge ni dalili gani na inasababishwa na nini? Je, kuna madhara? Mwanzo nilipolinunua huu weusi haukuwepo kabisa.
Habari wadau,
Nataka kufungua ka grocery kangu nipate hapo japo mia 2 mia 2, sasa issue napata utata kati ya fridge brand ya Boss au Hisence showcase.
Naombeni wazoefu au wataalam wa hizi mambo ili nifanye maamuzi mujarab
Fridge la LG linauzwa. Lipo katika hali nzuri mno.
560ltrs
Opti fresh
Frost Free (linagandisha bila kuweka mabarafu.
Energy saving (linatumia umeme mdogo sana).
Linafaa kwa matumizi ya nyumbani au biashara.
Bei: 450,000 neg.
Lipo Dar es salaam
Kwa muhitaji piga 0689 799191
Ninauza fridge yangu aina ya Boss.
Inatumia umeme mdogo (energy server). Ina sehemu ya kugandisha na sehem ya fridge kawaida
Ipo Arusha mjini
Offer yangu ni Tsh. Laki 5
Sábado ya kuuza nina uhitaji wa pesa kwa haraka.
Mazungumzo yapo kwa mteja alie serious tu.
Namba ya simu 0758435748
Nataka kununua fridge ya mlango mmoja kwa ajili ya matumizi ya nyumbani.Nimeona fridge za kampuni zifuatazo;
1.Mr Uk
2.Boss na
3.Hisense.
Hisense compressor yake iko nje na haina bulb kwa ndani.
Mwenye ufahamu na hizi fridge naomba ushauri nichukue ipi?
Fridge lina sehemu ya kugandishia.
Fridge ni la mlango mmoja.
Linatumia umeme mdogo.
Fridge ni jipya. Halijatumika tangu linunuliwe.
Price: 330,000
Location: Dar es Salaam
Contacts: 0682507838/ PM
Fridge langu mlango wake haubani vizuri. Yaani ukifunga kunabaki upenyo unaosababisha baridi kutoka nje. Najua Kuna zile lock Kama za milango ya nyumba lakini kwangu naona kama ni za kizamani Sana na zinaaribu muonekano wake.
Naomba kujua kama kuna lock za kisasa au ambazo zinatumika sumaku au...
Habari zenu wana Jamvi, naombeni ushauri juu ya hizi fridge zilizopo madukani, ni aina gani ya fridge ni nzuri na inayodum mda mrefu, na ni kitu gani cha kuzingatia wakati wa kununua hizi fridge, maana nmeona kampuni nyingi sana kwa sasa zikiwa zinauza hizi bidhaa.
Mfano, jana nmetaka kununua...
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