Flame and Flow Analysis of LPG in Household Cookers with Rectangular Ports

Öz

The cold flow and flame characteristics of liquefied petroleum gas (LPG- mixing 70% butane and 30% propane) in a household stove are experimentally investigated. The household stove has three cookers with rectangular ports and different sizes. The flame temperature and gas flow velocity are measured at maximum and minimum flow rates under laboratory conditions. Temperatures in the horizontal, vertical, and diagonal directions are measured at a distance between the reference point and 3 cm. The temperatures between the maximum and minimum flow rates show significant differences for all cookers. Flame temperatures at the gas exit point are 620‒710 °C at the maximum gas flow rate. On the largest cooker, the gas emissions in the diagonal direction at the maximum flow rate are also measured. The maximum value of CO emissions 7000 ppm is measured at the reference point. CO2 emissions are 12% between the reference point and 1.5 cm and slightly decreasing to 11% at other points. NOx measurements (ppm) show a peak value of 180 ppm at the 0.5 cm point. Cooker 1 is in the turbulence regime at maximum flow rate, while the other cookers are in the laminar regime.

Anahtar Kelimeler

• LPG
• flame temperature
• gas flow velocity
• emissions
• household cookers

Proje Numarası

Yok

Gaz Çıkışı Dikdörtgen Kesitli Ev Tipi Ocaklarda LPG’nin Alev ve Akış Analizi

Öz

Bir ev tipi ocakta sıvılaştırılmış petrol gazının (%70 butan ve %30 propan karışımlı) soğuk akış ve alev karakteristikleri deneysel olarak incelenmiştir. Ev tipi ocak, gaz çıkışı dikdörtgen kesitli farklı büyüklüklerdeki ocaklardan oluşmaktadır. Maksimum ve minimum gaz akış debisinde, alev sıcaklığı ve gaz akış hızları laboratuvar şartlarında ölçülmüştür. Sıcaklıklar yatay, dikey ve diagonal doğrultularda ve referans noktası ile 3 cm arasındaki mesafelerde ölçülmüştür. Maksimum ve minimum debilerdeki sıcaklıklar, tüm ocaklarda önemli farklılıklar göstermiştir. Maksimum debide, gaz çıkış noktasındaki sıcaklıklar 620‒710 °C arasındadır. En büyük ocakta, maksimum debide diagonal yönde gaz yayınımları da ölçülmüştür. CO’in maksimum değeri referans noktasında 7000 ppm olarak tespit edilmiştir. CO2 yayınımı referans noktası ile 1.5 cm arasında %12 olup, diğer noktalarda yavaşca %11 e azalmaktadır. NOx ölçümleri 0.5 cm noktasında 180 ppm ile maksimum değeri göstermiştir. Ocak 1 maksimum debide türbülanslı akışa sahip iken, diğer ocaklar laminer akış rejimine sahiptirler.

Anahtar Kelimeler

• LPG
• alev sıcaklığı
• gaz akış hızı
• yayınımlar
• ev tipi ocaklar

Destekleyen Kurum

Yok

Proje Numarası

Yok

Kaynakça

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