Question

a food product will be frozen and placed in a can with 80% moisture content and...

a food product will be frozen and placed in a can with 80% moisture content and 6cm in diameter. product density 500 kg / m3, thermal conductivity 0.1W / (mK) and initial freezing temperature of -2 degrees Celsius. after 10 hours it has been frozen at -15 degrees Celsius (freezing medium) the temperature of the product becomes -10 degrees Celsius. determine the convective heat transfer coefficient on the freezing medium .. (W / [m2 K])

Homework Answers

Answer #1

The detailed solution is given below.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A food product will be frozen and placed in a can with 80% water content and...
A food product will be frozen and placed in a can with 80% water content and 6 cm in diameter. product density of 800 Kg / m3, thermal conductivity of 0.1 W / (m K), and initial freezing temperature of -2 degrees Celsius. After 10 hours frozen at -15 degrees Celsius (freezing medium), the product temperature becomes -10 degrees Celsius. determine the convective heat transfer coefficient on the freezing medium .... (W / [m2 K])
A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C...
A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C and has a density of 7250 kg/m3, thermal conductivity of  16.7 W/m-K, and a specific heat of 540 J/kg-K. The cylinder is suddenly plunged into water with a temperature of 27 C, giving a convective heat transfer coefficient of 380 W/m2-K. a) Determine the surface and centerline temperatures of the cylinder 12 minutes after immersion. b) Calculate the heat transferred from the cylinder during this...
Fresh food product is held in cold storage at 278K. It is packed in a container...
Fresh food product is held in cold storage at 278K. It is packed in a container in the shape of a slab with all facesinsulated except for the top flat surface, which is exposed to airat 278oK. The slab is 154.2 mm thick and the exposedsurface area is 0.18m2. The density of the foodstuff is 641 kg/m3. The heat of respiration is 0.070 kJ/kg-hr.and the thermal conductivity is 0.346 W/mK.
A 2.5 cm inside diameter pipe is being used to convey a liquid food at 80ºC....
A 2.5 cm inside diameter pipe is being used to convey a liquid food at 80ºC. The inside convective heat transfer coefficient is 10W/(m2ºC). The pipe (0.5 cm thick) is made of steel (thermal conductivity = 43W/mºC). The outside ambient temperature is 20ºC. The outside convective heat-transfer coefficient is 100 /(m2ºC). Calculate the overall heat transfer coefficient and the heat loss from 1 m length of the pipe.
Overall heat transfer co-efficient A pipe carrying milk at 4 °C without insulation will gain heat...
Overall heat transfer co-efficient A pipe carrying milk at 4 °C without insulation will gain heat from outside environment (with air temperature of 20 °C) before it reaches the cold storage containers from heat exchanger. If the pipe carrying the milk has thermal conductivity of 40 W/(m °C) with inside diameter of 5 cm and outside diameter of 7.5 cm, what is the maximum length of the pipe to limit rate of heat transfer to 1kW. Consider the convective heat...
Consider a cube of density, specific heat, and thermal conductivity of 2700 kg/m3, 0.896 kJ/kg-K, and...
Consider a cube of density, specific heat, and thermal conductivity of 2700 kg/m3, 0.896 kJ/kg-K, and 204 W/m-K, respectively. The cube is 5 cm in length, and is initially at a temperature of 20 oC. For t>0, two of the boundary surfaces are insulated, two are subjected to uniform heating at a rate of 10,000 W/m2, and two dissipate heat by convection to an ambient temperature of 20 oC, with a heat transfer coefficient of 50 W/m2-K. Assuming lumped capacitance...
Air enters a rectangular duct measuring 40 cm by 50 cm with a velocity of 8.5...
Air enters a rectangular duct measuring 40 cm by 50 cm with a velocity of 8.5 m/s and a temperature of 50 degree Celsius. The flowing air has a thermal conductivity 0.03 W/m K, kinematic viscosity (16.95*10^-6) m2/s and from empirical correlations the Nusselt number has been approximated to be 425. find the convective heat flow coefficient.
A can of soft drink, 12-cm high and 6-cm diameter, is initially at 20°C. It is...
A can of soft drink, 12-cm high and 6-cm diameter, is initially at 20°C. It is placed in a refrigerator where the air is at 0°C. The convective heat transfer coefficient associated with the outer surface of the can is 10 W/m2 °C. Assuming the properties of the drink to be those of water and that the heat capacity of the container is negligible, estimate the time taken for the temperature of the drink to reach 5°C. USING EES PLEASE
A block of tofu (5 cm × 2.5 cm × 1.25 cm) needs to be sterilized...
A block of tofu (5 cm × 2.5 cm × 1.25 cm) needs to be sterilized to make it shelf stable. Typically holding this product at 120 C for 2.5 minute is adequate to sterilize this product. This is accomplished by keeping the product in high pressure retort containing steam at 121 °C. Calculate the process time for this operation if the convective heat transfer coefficient of steam is 200 W/m2, and thermal conductivity of the tofu is 2 W/m2....
Solve the following exercise using the infinity plate method under convection. A large thermoplastic sheet, 10...
Solve the following exercise using the infinity plate method under convection. A large thermoplastic sheet, 10 mm thick, at an initial temperature of 20°C (293K), must be heated in an oven to mold it. The oven temperature is maintained at 100°C (373K), the maximum temperature to which the plastic can be subjected, and it is necessary to ensure that the temperature throughout the sheet reaches a minimum of 80°C (353 K) . Calculate the minimum time during which the foil...