New Mars Forums

Official discussion forum of The Mars Society and MarsNews.com

You are not logged in.

Announcement

Announcement: As a reader of NewMars forum, we have opportunities for you to assist with technical discussions in several initiatives underway. NewMars needs volunteers with appropriate education, skills, talent, motivation and generosity of spirit as a highly valued member. Write to newmarsmember * gmail.com to tell us about your ability's to help contribute to NewMars and become a registered member.

#1 Re: Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Today 12:52:00

My thoughts are to plumb the exhaust into the ground and filter through a water or amine solution so that after giving up its heat to the sand that it exits cleaner than it entered.

other suggestions
These simple tips will help you reduce your wood-burning stove’s environmental footprint [with video]

#3 Re: Science, Technology, and Astronomy » Heat Pump - Heat Pumps » Today 10:14:28

How Heat Pumps Could Save Most Americans Money on Energy

This is a split type of air-to-air design.
BB1il459.img?w=768&h=495&m=6

https://www.nrel.gov/news/press/2024/be … eport.html

Nationally, heat pumps would reduce home energy use by 31% to 47% on average and residential greenhouse gas emissions by 36% to 64%, the study found.

#4 Re: Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Today 10:05:23

tahanson43206 wrote:

What quantity of wood is needed to support a family for a year?

I am able to collect fallen limbs from my trees over the course of a year. In a typical year, the quantity of wood shed by the trees would make a decent wheelbarrow load, or small fire that would last for an hour or so.  If you are contemplating heating and cooling a home with wood, you will need railroad carloads of wood, over the course of a year.

Whether in pellets or cord wood you end up with 3-4 tons of pellets or the same number in cords of wood. for winter heating.

Thats why this is a backup to creating thermal stores when the weather is not sunny. Then again so would rain or streams for waterpower to electrical and then to heat elements in the sand and that is how wind would also work as well.

That said understanding heating in general is required whether by any fuel form in use.
What Is a Furnace Heat Exchanger and Why Is It Important?AA1mM17Q.img?w=768&h=768&m=6

Its where we get into heat exchanging and how to plumb the heat into storage.

#5 Re: Unmanned probes » Low cost Mars Sample Return. » Today 08:24:37

Nasa has awakened and is NASA chooses 9 companies for Mars Exploration Program concept studies will pay nine companies between $200,000 and $300,000 each to conduct a dozen tests to support future missions to Mars.

Nothing like a reset....

#7 Re: Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Today 08:11:23

Substitute the wood stove in the location of the solar collector and gas water heater and the same system remains for storage of the heat produced by burning wood.

9ab743dedadaa8798175ca98727b3cda.jpg


8ea13a1b4c64af261e25f06c3797a1f9.jpg

Here is a decorative unit.

Heathstone_Heritage8024_191031.jpg

Heres what a poor man's radiator might look like
tn2t2gwqf1af.jpg

Then again is all you want is to heat the air in the home you would capture the heat going up the flue
How-To-Build-A-Wood-Stove-Heat-Exchanger-1.jpg

So, it's not just about the wood stove but a means to generate heat energy for later use directly or indirectly depending on when you are in need of it.

here is what the storage trough cug with the pipe but not the sand might appear.
geothermal-588a6a105f9b5874ee276532.jpg

One needs to have the loops with sand in between the coils to maximize the heat.

#8 Re: Meta New Mars » Housekeeping » Yesterday 19:55:14

Yes, your post got to the data base before mine did. But for all that has seen it would give more data.

#9 Re: Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Yesterday 19:50:24

Sending the heat from any working fluid can also be done in this manner as well

eyJlZGl0cyI6eyJyZXNpemUiOnsid2lkdGgiOjcwMH19LCJidWNrZXQiOiJncmVlbmJ1aWxkaW5nYWR2aXNvci5zMy50YXVudG9uY2xvdWQuY29tIiwia2V5IjoiYXBwXC91cGxvYWRzXC8yMDE4XC8wN1wvMjQyMTE5MjlcL1NvbGFyIHRoZXJtYWwgcGx1cyBzYW5kIC0gUmFkaWFudGVjIC0gNC1tYWluLmpwZyJ9

#10 Re: Meta New Mars » Housekeeping » Yesterday 19:23:34

Make a note of the post topic page number as there is a sync issue for the last post that sets the next page that gives this error.

Copying the address bar content will also help.

#11 Re: Science, Technology, and Astronomy » TAO Observatory in Japan - Highest on Earth in 2024 » Yesterday 19:19:55

Telescopes come to mind as a category for the many types and what they are observing.

#12 Re: Not So Free Chat » My New E-mail Account - Yippee, a New Account... » Yesterday 19:18:23

Here is the example of the crash in 2005 that messed uop the visitation times.

User activity
Registered: 2001-09-23 (0.0.0.0)

Last post: 2005-05-13 12:56:20

Last visit: 1969-12-31 19:00:00

Notice the year of the last visit.

#13 Re: Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Yesterday 19:14:08

Now that I have lost my train of thought for what was to get posted here is an image.

f474949dc9a95233447edd056f1fbb50.jpg

Here is the typical coil of tubing around teh flue.
3.jpg

Then again, a wood burning furnace comes to mind
IMG953761.jpg

#14 Re: Science, Technology, and Astronomy » Heat Pump - Heat Pumps » Yesterday 19:04:26

Well, running has to do more with not just how cold or hot the temperatures are outside but also on how drafty the place is so you always need more than what the rules of thumbs indicate. I have no exact figure until I make use of one.

How Much Electricity Does Heat Pump Use? (+ Running Cost Per Hour, Day, Month)

The heat pumps are more efficient so if I am spending more than the above wattage its not benefiting to install one.

here is the air to air system
how-much-does-a-heat-pump-cost-to-run.webp

#15 Science, Technology, and Astronomy » Wood stove thermal heat creation and storage » Yesterday 18:09:52

SpaceNut
Replies: 9

I have talked about using a wood stove to supply heat to sand or water that is in a storage location that is already common to other such heating sources from other means, making a hybrid system.

DIY Wood Stove Water Heater Plans

We Built a DIY Woodstove Hot Water System for Indoor Wood-Heated Water

In the words of Void Not Done!!!!

I am being interrupted by the family...

#16 Re: Science, Technology, and Astronomy » Heat Pump - Heat Pumps » Yesterday 17:37:19

Sizing of a heat pump BTU and tons to wattage used to produce the heat required.
Heat pump sizing guide: Bigger is not better

Size is also known as capacity, measured in tons or Btu. One ton equals 12,000 Btu. The goal is to match that size with your home's needs on the coldest and/or hottest days. 

Simple sizing rules are basically worthless
The first page of Google is filled with terrible advice about heat pump sizing. You'll find a wide range of shortcuts and rules of thumb that can't all be correct, including:

Multiply the number of square feet of living space in your house by 30

Multiply the square footage by 20

Add 1,000 Btu for every 100 square feet—in other words, multiply the square footage by 10

Multiply the square footage by somewhere between 30 to 60, depending on your local climate

Start with 1 ton for the first 1,000 square feet, and then add an extra ton for every additional 500 square feet

So for a 2,000 square-foot house, you're left with estimates from as low as 20,000 Btu (theoretically possible for milder climates or very well-built homes, but unlikely) up to 120,000 Btu (certainly wrong). And each of the estimates in between could be off by at least a half-ton.

How Much Power Does a Heat Pump use? (1-5 Tons)

Heat pumps use between 545W and 4,286W of power depending on unit size and energy efficiency. An average heat pump runs on 667W of power per ton, with a seasonal energy efficiency rating (SEER) of 18. A 3-ton unit, therefore, needs 2,000W of power and costs you $1,533 a year.

Formula:

Unit size (in BTU/h) = Unit size (in tons) × 12,000 BTU/h
Total Wattage (in Watts) = Unit size (in BTU/h) ÷ SEER (in BTU/Wh)

So, if I used my winter electric - summers bill. I know the heat portion of the requirement to stay warm with my current methods.
Its roughly 50 kwhrs a day of power being used.

If I, then can calculate a source to provide this then I have achieved a desire cost but that's provided that I can do such a feat.

#17 Re: Mars Society International » Thanks Appreciation to Mars Society for NewMars forum support » 2024-04-30 17:53:47

I second the appreciation of Mars society and for all the past webmasters that have come before James as they carried that sword from the past towards the present.

#18 Re: Science, Technology, and Astronomy » Heat Pump plus Thermal Energy Storage Hybrid Home System » 2024-04-30 17:51:45

That would mean designing for a ground source heat pump. The storage is in the ground within an isolate container that is sealed such that outside water would not enter the chamber. Its walls are further insulated to keep heat loss low.

Here is such a designed system.
63188ce0d047a41fc21ed423_Types-of-ground-source-collector.png

Its about sizing for the application.

More heat sources as well as a separate cold chamber can be also possible as that's more loops of tubing running with in the storage chamber. A few more pumps and temperature control to make heat or cold for thehome.

#19 Re: Science, Technology, and Astronomy » Heat Pump - Heat Pumps » 2024-04-30 17:43:15

I have an installer that works with me so I am hoping that I might get what I need from this gentleman even if its broken at least I can learn and build on the cheap.

What are heat pumps and could they help your home save energy?

The Significance of Heat Pumps in Promoting Sustainable Building Methods and Attaining Energy Efficiency Goals

https://en.wikipedia.org/wiki/Ground_source_heat_pump

Of course, size starts with a simple sq ft of the home to heat assuming the normal 8 ft ceilings.
Heating Specialists on Thumbtack cost $9000 - $50000

Horizontal loops are the most common and cheaper of the two standard ground loops because they only require a trench depth of 4-6 feet. This doesn't usually require any special digging equipment, which helps keep the cost of installation low. However, you need a lot of land to install a horizontal loop large enough to absorb and transfer heat into the ground, especially for larger buildings.

Horizontal ground loops typically require 400-600 feet of pipe (depending on the efficiency of the soil and the pipe material) for every ton of cooling and heating capacity. The average geothermal home system uses a 2-3 ton heat pump which means well over a thousand feet of pipe for even a small system.

Many horizontal loops are buried under spacious areas like parking lots or parks, but a large yard (enough to lay 1,500 - 1,800 feet of pipe for a 3 ton heat pump) can provide enough space for a horizontal loop with the right layout. Ask about layout options like coiled loops to save you space and keep you from installing the more costly option—vertical loops.

#20 Re: Meta New Mars » Housekeeping » 2024-04-30 17:08:24

The wood was in the lower part of the raised ranch style home and its quite a bit cooler in winter as the cinder block wall is exposed to the cold of winter and would not allow for the heat produced to rise to the upper part of the home. The would be used in an external chamber since its exhaust from the flue would enter the sand to give the otherwise waste heat for later use.

It would be used on days that would have low to no heat being generated by the solar concentrating parabolic system.

#21 Re: Science, Technology, and Astronomy » Heat Pump - Heat Pumps » 2024-04-29 20:30:31

Was surprised to see how great the difference is for a furnace versus a heatpump

Heat Pump Buying Guide

Most homeowners choose a 3-ton-capacity heat pump, which is good for about a 2,000-square-foot home, according to HomeAdvisor, a home-improvement services marketplace.

According to HomeAdvisor, the average cost to install one unit is $3,000, but the price could range from $2,000 to $6,000 depending on how it’s mounted and installed. For multiple mini-splits, plan to spend up to about $14,500, depending on home size, heat pump capacity, type of heat pump, and how many units you choose.

Ground-source or geothermal heat pumps absorb and release heat underground, where the temperature is a constant 50° F to 60° F all year. They are highly efficient because they don’t have to compensate for big temperature swings the way air-source heat pumps do. But because the heat-exchanging pipes are buried underground (either horizontally or vertically), ground-source systems can be impractical for small lots or those with certain types of soil or landscapes. Ground-source systems can cost from $6,000 to $30,000 or more.

A heat pump’s cooling capacity is measured in British thermal units per hour (Btu/hr.). Btu/hr. can also be expressed in “tons,” with 1 ton equaling 12,000 Btu/hr.

Note that heat pumps need far less capacity to heat a space than a furnace or boiler would because they’re much more energy-efficient. For example, if your home needed a 100,000-Btu/hr. furnace, it may need only a 36,000-Btu/hr. heat pump.

Residential Heat Pumps

How a heat pump works

Review on compression heat pump systems with thermal energy storage for heating and cooling of buildings

#22 Re: Meta New Mars » Housekeeping » 2024-04-29 19:08:38

Programming syntax is an art to see, and programs can miss quite a bit, but it sure helps.

#23 Re: Science, Technology, and Astronomy » Thermal Energy Storage » 2024-04-29 19:05:27

The several working fluids for each part of the system are low in priority to what are the ranges of temperature and devices that can handle these. As well as the finding of low-cost devices to make use of in each portion of the system. I intend to have it as a hybrid system with a wood thermal heating source to create power from as well for when solar is not happening. Usually this means that wind will as well as some rain or water run off can be made from as well.

I already have sand for the storage vault for the heat need to make a below ground storage that is insulated, of possible concrete chamber formed walls.

Things that I have not are the compressor but looking, need to find the expander that will be in the pressure range of the working fluids. Other pumps for the other fluids are more readily avaiable.

What I can not afford needs to be built by hand or salvaged from where they can be found.

Some of the pressures if to hot will require tubing that can take the stresses that they will see while other sections of the design can use copper tubine and even pex plastic tubing.

here is an example of the design that could be created.
1-s2.0-S2215098621001579-gr1.jpg

the heat/ evaporator is the solar concentrate trough collector location. It is also where the sand storage gets coupled as it would send heat to the accumaltor or expansion tank. The condenser is a lower level of heat but its still really hot to capture.

#24 Re: Science, Technology, and Astronomy » Trough Solar Collector- Design- Construction- Operation- Maintenance » 2024-04-29 18:28:36

Seems that after reading all of the posts on scroll compressors used in the expanding means changing the turbine units blade shape as there are no or not many of them in the 10kw range and lower for use of the shelf. Will need to continue reading about expander design for making a solar thermal power creation unit.
Seems that sulfur is abundant on mars so we could make lots of these after the first is brought to mars from insitu materials.

Experimental analysis of R134a working fluid on Organic Rankine Cycle (ORC) systems with scroll-expander

Assessment of single rotor expander-compressor device in combined organic Rankine cycle (ORC) and vapor compression refrigeration cycle (VCR)

https://www.geothermal-energy.org/pdf/I … _Final.pdf

#25 Re: Meta New Mars » Housekeeping » 2024-04-29 18:23:29

Working in the clone it's got just the once query line.

Most of the forms are just search functions for a table so if you get a response from 1 of the headings then one can assume that the total form will function as its column name related in the tables.

The ban/unban and edit of those have proven to work as well.

Will test some more of the user profiles but I am expecting no more issues.

Have already set a new user group change members and other such in allowing post category rights.

Most tests are to make sure the data returned from a tabler entry or search are true or correct.

Board footer

Powered by FluxBB