The temperature of Heaven can be rather accurately computed from available data. Our authority is Isaiah 30:26

Moreover, the light of the Moon shall be as the light of the Sun and the light of the Sun shall be sevenfold, as the light of seven days.

Thus Heaven receives from the Moon as much radiation as we do from the Sun, and in addition seven times seven (49) times as much as the Earth does from the Sun, or fifty times in all. The light we receive from the Moon is one ten-thousandth of the light we receive from the Sun, so we can ignore that. With these data we can compute the temperature of Heaven.

The radiation falling on Heaven will heat it to the point where the heat lost by radiation is just equal to the heat received by radiation, i.e., Heaven loses fifty times as much heat as the Earth by radiation. Using the Stefan-Boltzmann law for radiation:

(H/E)^4 = 50

where E is the absolute temperature of the earth (-300°K), gives H as 798°K (525°C).

The exact temperature of Hell cannot be computed, but it must be less than 444.6°C, the temperature at which brimstone or sulphur changes from a liquid to a gas. Revelations 21:8 says

But the fearful, and unbelieving...shall have their part in the lake which burneth with fire and brimstone.

A lake of molten brimstone means that its temperature must be at or below the boiling point, or 444.6°C (Above this point it would be a vapor, not a lake.)

We have, then, that Heaven, at 525°C, is hotter than Hell at 445°C.

[From "Applied Optics" vol. 11, A14, 1972].
Quoted from the website of David G Wiseman.

A Chinese man jailed in 1994 for his wife's murder has been freed after his wife turned up not only alive but with another husband (story released on yahoo news). The man's wife, Zhang Zaiyu, disappeared after a domestic dispute, and when a woman's body was found in a local reservoir, the man (She Xianglin) was detained on suspicion of killing her. The body was so decomposed it could not be identified, but a local court found She Xianglin, a former part-time police officer from central Hubei province, guilty of murder and sentenced him to death. A provincial court later commuted the sentence to 15 years in prison.

She Xianglin told the Beijing News that when he was first apprehended, police took him to a remote house and interrogated him for 11 days. He was given just two bowls of rice a day, nearly no water, prevented from sleeping and threatened with death. He said he did not remember making a confession, though the local court that ruled on his case was told he had.

The China Daily said photographs published since She Xianglin's release showed he had been severely beaten while in jail and his legs and fingers broken.

International human rights groups say police torture is widespread in China and that suspects are held for long periods without trial, but it is rare for a victim, or the domestic media, to go public about police brutality. She Xianglin said he wanted compensation for his years in jail and justice to be done; "I want those officials involved in my conviction punished".