Hello everyone, I have a question and hope someone can help. Now that the shell of our house is finished, the plasterers are next. Interior plastering is scheduled to start tomorrow. The weather forecast predicts temperatures between 4 and 5 degrees Celsius (39 to 41°F) for the coming days. At night, temperatures are expected to be around the freezing point, even dropping to minus 5 degrees Celsius (23°F) the day after tomorrow. The construction manager said this wouldn’t be a problem. If the temperatures rise again, the exterior plaster will be applied right afterward. However, a friend told me today that this makes no sense at all. If the interior plaster goes up now, and then the screed is laid, there will be so much moisture inside the house that it won’t be able to escape once the exterior plaster is applied immediately afterward. Besides, he said it must never be colder than 5 degrees Celsius (41°F) during the first days and nights. So, if the exterior plaster is applied this winter, I can be sure to get mold in the house over time. He advised me to wait at least until spring. That sounds reasonable. What do you think?
There are diesel heaters with and without an exhaust pipe.
If you only have the horizontal blower pipe, it is a model without an exhaust pipe.
If a short pipe branches upwards from the horizontal blower pipe, that is the exhaust pipe.
Some people attach an aluminum flexible ventilation duct to it and lead it outside.
It is important not to block the fresh air openings on the exhaust deflector, which cool the exhaust gases.
Conventional diesel heaters have a power output of about 20–30 kW (27–40 hp); with that, you can create T-shirt weather inside the building within 15 minutes.
The fan on the heater requires electricity to operate.
If you only have the horizontal blower pipe, it is a model without an exhaust pipe.
If a short pipe branches upwards from the horizontal blower pipe, that is the exhaust pipe.
Some people attach an aluminum flexible ventilation duct to it and lead it outside.
It is important not to block the fresh air openings on the exhaust deflector, which cool the exhaust gases.
Conventional diesel heaters have a power output of about 20–30 kW (27–40 hp); with that, you can create T-shirt weather inside the building within 15 minutes.
The fan on the heater requires electricity to operate.
B
Bieber08159 Jan 2017 13:37cosio schrieb:
Since a gas cannon produces condensate, it is disqualified. How is this different from the diesel cannon (without an exhaust pipe to the outside)? And what exactly do you mean by condensate?
Gas should not be used for drying because burning gas releases water vapor, which increases indoor humidity. Approximately 800 grams of water vapor are produced per 1 kilogram of propane gas. This results in the opposite effect of what is intended. When the gas heater is turned off, condensation can form in droplets on cooling ceilings and walls.
A diesel heater should also not be used for drying.
1. Without an exhaust pipe, indoor air quality will deteriorate, and soot particles and oil residues can settle on the walls.
2. The rapid and intense heat primarily affects only the surface.
This can cause cracking and flaking, with the walls drying only on the surface. Moisture trapped beneath the quickly dried surface may remain within the structure.
A diesel heater should also not be used for drying.
1. Without an exhaust pipe, indoor air quality will deteriorate, and soot particles and oil residues can settle on the walls.
2. The rapid and intense heat primarily affects only the surface.
This can cause cracking and flaking, with the walls drying only on the surface. Moisture trapped beneath the quickly dried surface may remain within the structure.
B
Bieber08159 Jan 2017 16:00AOLNCM schrieb:
Gas drying is not recommended because combustion of gas produces water vapor, which increases indoor humidity. The same applies to diesel. Without doing the calculations, I would suggest that roughly the same amount of water is produced relative to the heating value.
However, I believe that heating allows the air to hold significantly more moisture (additionally) than is produced by combustion. And the moisture (construction moisture and combustion air) needs to be removed regardless!
AOLNCM schrieb:
1. Without an exhaust pipe, indoor air quality deteriorates and soot particles and oil residues can settle on the walls.
2. The rapid and intense heat generation only heats surfaces. Two very good and accurate points!
Maybe it’s better to use underfloor heating and run a standard drying program?
K
Knallkörper9 Jan 2017 16:16There are also diesel heaters with under 10 kW and an exhaust pipe that can be routed outside. Additionally, there are diesel heaters designed to be placed outdoors, with a flexible duct used to bring warm air inside.
Both types of diesel heaters are very suitable for construction drying. Diesel heaters without an exhaust pipe have the same effect as gas burners and are therefore unsuitable. When burning 1 kilogram (2.2 pounds) of diesel, approximately 1.4 kilograms (3.1 pounds) of water is produced!
Both types of diesel heaters are very suitable for construction drying. Diesel heaters without an exhaust pipe have the same effect as gas burners and are therefore unsuitable. When burning 1 kilogram (2.2 pounds) of diesel, approximately 1.4 kilograms (3.1 pounds) of water is produced!