Heater Definition and 202 Threads

I have an electric air heater with a pressure loss of 3kPa (according to manufacturer at the flow rate and temperature I will be using). Air is supplied to the heater using a centrifugal fan with a static pressure of 8.7kPa (gauge) and a flow rate of 88m3/hr, giving a dynamic pressure of around...

Hi Everyone, I am a mechanical Engineer, playing in the electrical word :) I was thinking about creating an inductive heater, that was based on 2 concentric pipes, with a current flow path that is from the inside pipe, through to the outside pipe, and utilizing an induction power supply to...

Hello Im looking to build a very small electrical resistance heater. It should produce no more than 1 to 3 degrees of heat. This is for a personal project of mine. I need to know what types of materials I need to use. Id like the device to be both battery powered and plug in. Can anyone...

Homework Statement Homework Equations relevant equations listed with each question The Attempt at a Solution a) to solve for the power output of the heater, i used the following equation: Power = Energy/time i already know that Energy = Quantity so based on this, i can solve for Q = mass(ice)...

It is safe to add on extra socket by this way? Original connection: postimg.org/image/v6nshoygh/ Add-on connection: postimg.org/image/vkoccsyu5/ The extra socket is for light usage only. Water heater is instant water heater without tank. The switch is double pole single switch.

Hello Physics Forum. I have to complete a solar water heater project for school and choosing between what would be better for the insulation of a tin reservoir. I'm leaning towards the glad wrap bag because it will let more light hit our reservoir. However it will be a quite windy day and cotton...

Homework Statement The mechanical equivalent of heat is 1cal=4.18J. The specific heat of water is 1cal/g*K and its mass is 1g/cm^3. an electric immersion water heater rated at 400 W should heat a liter of water from 10C to 30C in about how much time Homework Equations R=v/i power=v*i The...

I Was wondering how a frenette heater works? By frenette I mean the one that works thanks to friction. What would be the maximum heat produced assuming that we take The most ideal situation. Thanks a lot.

Am experimenting with an Omega Engineering AHP 7561 standard air heater rated for up to 240v. Specs include ability to keep a 20 cfm flow exiting @1000F while pulling about 10A @220v. Nichrome melts around 2400F. I'd like to produce small bursts (lasting a few seconds) of very hot air, like...

What sort of EM field is produced in an induction heater? And how to measure it? That's it, basically. Assuming an induction heater is running on 200khz, and consuming about 3000 watts, how would I go about measuring the magnetic field produced in its coil? Now, I'm rather confused about all...

A heat pump in winter heat energy from the bottom of a lake, where temperature is 4 ° C and delivers thermal energy in a home where the temperature is 22 C. What is the theoretical minimum power the heat pump must be supplied to you at home must be able to take out 4000 watts heating power ...

I am a video and sound engineer. There is clearly AM radio coming from my wall heater. An earlier thread on this topic discussed the possibilities but ultimately left the subject with an assumed crazy old lady's false perception. I assure you this is happening. There is a 50,000W AM station...

Homework Statement A 34.6 -cm-diameter coil consists of 25 turns of circular copper wire 2.25 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 3.55 × 10-3T/s. Determine a. the current I in the loop, b. and the rate dU/dt at which thermal...

Hi I am trying to characterize a microscale resistive heater. In my Bode plot there is decay that is less than -20dB/decade indicating that there is a zero in the system. Anyone having an idea of what physical meaning a zero in a resistive heater has? Thanks.

Hi Guys, I am aware how to calculate flow rate Q (c x dt), but when sizing a direct gas fired water heater there is no dt but of course need allow for temp rise, but what parts of information can be known and unknown and how would i even start to put a formula together? Ultimately i would like...

I've got a propane heater out of my deck that I use on cold days to enjoy a fine stogie and a port. It loses a lot of heat straight up. I'd like to redirect that heat back to me. (But safety first, I know.) I've been thinking of a simple curved sheet of aluminum suspended above it, but I'm...

Homework Statement A 660[W] heater can work on 120[V]. if the voltage decreases to 110[V] what is the power that it consumes? Homework Equations $$V=iR$$ $$P=iV$$ For pure resistance: ##P=i^2R## The Attempt at a Solution The current at 660[W]: ##P=i\cdot 120\rightarrow i=5.5[A]## The...

Hey guys! I have been following the forum for quite some time now. With all of you smart people out there, I am hoping you can help me design a heater, or at least lead me in the right direction. What I am attempting to create is a battery powered heater, to maintain a temperature of...

I bought a small 1500 Watt portable blow heater for my room because it getting really cold, but whenever its turned on, it trips the circuit breaker.What exactly causes the circuit to break? I mean, what units should I concern myself with when buying a heater, --Watts or Voltage? Why does this...

Hi good day to you all :) can anyone explain with some detail the principles on how a solar water heater works and the energy transfers. THANKS

The chartplotter on my boat works fine. But the buttons work via a sealed keypad module. The contacts use (I think) a. Conductive grease. It works fine when the temperatures are 70F (20C) or higher, but not fine when it is colder. I'm fond of that device. I would rather modify it than...

Hi All, I am glad to have found this site as it offers a great range of information. I have looked through similar threads before posting this and didn’t find anything that answered my questions. I am to build an induction heater(cooker type) using a half bridge series resonance circuit as a...

Is anyone familiar with the so called rocket mass heaters - a popular DIY project? Has anyone ever studied design or uses?

I have a magnetic-mount heater (300 to 400 degF output) that I want to put on a pump that I wish to protect from freezing weather. However, considering that there are various components on the pump that are only rated up to 185 and 200 degF, I'd like to add some sort of temperature control...

I have a closed 4" diameter cylindrical vessel with Volume=400in^3 filled with air at room temperature. A 3500W immersion heater with Watt Density=23.9W/in^2 will be used to heat the air. Can the air get up to 600 degrees Fahrenheit? How can I find out what temperature the air will get to?

I've got a 300 liter water heater that has an electrical element (14 kW). The issue is that the element is positioned in the top third of the heater. I fear the water will become segregated so that only water in the top third will be heated, and the lower section will remain cold. The target...

Why is the final air pressure equal to the initial air pressure?

Hi, I am designing a plastic recycler and I need advice on choosing gauge of some nichrome wire. I want the heater to reach around 220 degrees C and I will be powering it with a laptop charger (19v 7.1 amps). Temperature control will be achieved with a PID controller. The nichrome wire will...

the question states exactly: Air passes over an electric heater at a steady rate of 2500 cubic centimeters per second. the steady inlet flow temperature of the air is 20 degree celcius and the steady outlet temperature is 40 degree celcius. part a. what is the heat absorbed by the air...

Hi Everyone, Hope this is the right section of the forum. I need some help to design a small tube heater for a specific application. I have attached a crude picture to show what i need. The flame needs to travel through a 3/4 inch pipe about 7 feet to heat the water. The problem is that i...

Hi all, I live in Perth, Australia and have just moved houses to a place with a relatively small pool, unfortunately it is shaded for the majority of the day by a big tree and it is quite cold and unwelcoming (unless you have built of a sweat). I want to make a solar pool heating system to...

If my PSU is 800W and it runs at full power, does that equal a 800W heater standing in my room, or does just some of it turn into heat?

Heres is an improvised immersion heater that was confiscated from inmates in a German prison: that looks like the absolute bare minimum immersion heater and is clearly dangerous as hell but I'm wondering how exactly it works. Its connected directly to a mains plug so there will be 240V AC...

I'm designing an inline heater for a coffee brewing project. My plan is to use an aluminum tube with Nichrome heater wire wrapped around it to heat the water flow. For brewing I need to dispense somewhere around 16 fl-oz per minute at a temperature of 205 F. I would like to determine...

Hi guys. I am new to this forum and need some help in solving some problems. My company produce thin film heater( doped tin oxide deposited on a substrate such as glass ceramic, beryllium oxide, aluminium nitride or alumina and some others). I need a formula for calculating within a few degrees...

Homework Statement *An electric resistance space heater rated at 1500W for a voltage source of v(t)=120√(2) sin(2pi60t)V has a thermostatically controlled switch. The heater periodically switches on for 5 min and off for 7 min. Determine (a) the maximum instantaneous power, (b) the average...

Water heater geyser(15 lit) for bathroom. We use geyser from morning 6am to 11:30 am only. So which would save power keeping the geyser on automatic mode or turning it "ON" in the morning and turning it off at 11:30 am. I know for e.g if the temp is set to 60 deg, on automatic mode...

If a water heater geyser(15 lit) set temp is dropped down does it help in saving power. I open both tap hot water and supply water simultaneously to my bucket for bathing purpose only. So if the temp is set high(as set by the company), it will be needed less and therefore less water is to be...

Homework Statement An outdoor heater has a resistance of 50 ohms and operates at 275 V. A transformer connected to a 120-V source supplies electricity to the heater. What is the power used by the transformer? Homework Equations P = V^2/R The Attempt at a Solution I plugged in the...

I am looking to power a heater. According to the product specifications it will require 11.1V/26.4A to heat to 800C and 16.9V/33.1A to heat to 1000C. The manufacturer sells an expensive temperature controller which we would like to avoid using. It has been suggested to me that I use a variable...

This is for a physics finals project. So it's not really a homework question. But I didn't know where else to post it and I need immediate help. I have made a passive solar heater out of pop cans and I need to find out how much energy (thermal) is produced. I know the equation for thermal...

Hi, new to the forum. Great place but much of the info far past my interlectual understanding. :frown: I have been looking at the idea of an induction heater for use in my job. I'm a mechanic by trade, nicknamed proffessor screwtop by my workmates :) Snap recently introcuced the...

"Setting Your Thermostat for Maximum Energy Savings" by Jeffrey Orloff claims that during warm months, setting an air conditioner less than 78 °F, or greater than 68 °F in cold months, is most efficient. Another page claimed that going down to 72 °F in the summer months can increase energy...

Homework Statement A heater is plugged into the same 120-V AC outlet as an 800-W hair dryer. If the total rms current drawn is 16.7A, then calculate the power rating of the heater. Homework Equations Pav=\frac{1}{2}I2peakR The Attempt at a Solution Irms=Ipeak/\sqrt{2} So...

Hi guys I'm looking to make an induction heater to heat bits of steel and aluminium (maybe 15mm by 25mm). Can anyone recommend a good source of information in terms of calculating the various parameters and other general information? I've looked at many websites but a lot of them seem to...

So, as the title describes, I am trying to build an infrared heating element for my own heating panel. I want to use this heater to cure an epoxy at 350F that is about 5" away. I'm an EE so the wiring and such will be simple but the heating calculations are beyond my area of expertise. Here is...

Homework Statement Air passes over an electrical heater at a steady rate of 2500cm^3 per second. The inlet temperature of the air is 20^oC ( 20 degrees celcius ) and the steady outlet temperature is 40^0C ( 40 degrees celcius) a) What heat is absorbed by air passing over the heater in 2...

So I have a UT130 Temperature Controller turning on and off a heater element through a SSR relay to maintain the temperature of water at a constant temperature. But the problem is that the temperature will still fluctuate making the relay go on and off continuously. I need the water to stay at...

Hi, I would really like some insight here, I don't know what I'm doing! also, sorry if i get the terms wrong and miss the obvious, this isn't my field. I will try to keep this short: I think that if you have a solid object, with a Heating element in the centre, and the surface in ambient...

car heater to heat house?? Hi everyone. So i had a brain wave and thought id put it out there for help or advice. I have just moved into a new house and thought id start looking into heating for the upcomming winter. I thought about buying a new 19 kilowatt wood burner to heat the living area...