Interesting Link

http://www.fvbenergy.com/projects/

Some initial Data Retrieved

I have obtained temperature fouling, organic solids content, oxygen content, and more. this data is for an entire year its going to take a while to sort through all of it.

Proposal

Waste Water Heat Recovery for District Heat Recovery

Bradley Erickson

            District Energy systems are becoming more popular in metro and urban areas. These systems are where you have a central plant for heating and cooling and the fluid for this system is piped around an area. The buildings in this area instead of having their own furnace, simply have a heating/cooling coil that uses the fluid from the district energy system as a source of heat and as a place to dump heat for air conditioning in the summer.

            This system with a large central plant offers interesting opportunities for energy savings and greener source of heat. This study will look into the feasibility of waste water heat recovery/rejection systems as central plants for these district energy systems.

            The effluence outflow from sewage treatment plants is quite warm and remains warm throughout the year. This is due mainly to the heat generated by the bacterial activity used to decompose organic material in the sewage. In systems with a large outflow this could provide the opportunity to extract a large amount of heat from the water.

Purpose

            There has been a great deal of research into the feasibility of district energy systems. I aim to shed light on this and to establish an awareness of the feasibility of waste heat systems in the hope that this will give designers enough information to consider these systems as viable options in a wider set of design scenarios.

Goals

1. Determine constraints to prevent negative ecosystem impacts downstream of effluent outflow.
2. Find a correlation between the capacity of sewage treatment plant, and the amount of heat it can provide.
3. Design complications, and considerations that must be made due to the composition of the effluent.
4. Determine the cost effectiveness of this system compared to more common plants such as biomass boilers, and natural gas boilers.

Methodology

            For this study data will be gathered on the effluent outflow temperatures, flow rate , turbidity and where possible oxygen content from a couple sewage treatment plants in various cities around the province. Data has already been obtained for the Prince George Landsdown sewage treatment plant. The minimum and maximum allowable outflow temperatures will be determined based on values used at the sewage treatment plants. This information will be used to determine the maximum amount of thermal energy that can be rejected or extracted into or from the effluent outflow without affecting the downstream ecosystem.

          

            To determine the correlation between sewage capacity and the amount of heat it can provide I will use interactive city maps from the municipalities of the sewage plants, this will be supplemented with information taken from google earth where necessary. From this I will determine the amount of lots and ratio of residential to commercial use. This will aid in determining the feasibility for various sized communities.

            To determine the cost effectiveness, the initial cost, running cost, and maintenance costs will be calculated. These costs will be compared to the costs of installing, running and maintaining a conventional combustion system that uses biomass or natural gas as a fuel source. The greenhouse gas emissions will also be calculated and compared between these systems.

First Post

Hello world!

This is the hello world test post.