How can estimates for EROEI for renewable energy be improved?

More Patrick Moriarty's questions See All

Will the world have to make do with lower levels of primary energy in future?

Nuclear power's share of global electricity production is falling, and that for renewable energy is rising very slowly. Experience shows that a new energy source first exhibits exponential...

31 December 2012 2,917 5 View

How should the 'carbon pie' be divided?

Climate researchers often discuss the remaining amount of carbon dioxide humans can emit to ensure that there is a reasonable probability (say, 66%) of limiting global warming since...

01 January 1970 7,046 3 View

What will be the transport fuel(s) of the future?

Petroleum-based fuels have dominated all forms of transport for over a century. In recent decades, three alternative fuels have gained market share: liquid bio fuels, natural gas, and electricity,...

01 January 1970 3,214 6 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

How to model Supercritical water gasification (SCWG) process in Homer software?

Hi everyone How to model Supercritical water gasification (SCWG) process in Homer software?

25 February 2021 4,075 1 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software?

Hi every one Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software? Biogas fuel is not available in the options thanks

23 February 2021 6,518 3 View

Are there any candidates for an Einstein's bare cosmological constant?

It is commonly accepted that General Relativity has its own 'bare' cosmological constant that contributes together with the cosmological constant resulting from vacuum energy density for an...

23 February 2021 5,448 8 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

How to Measure Consumer Willingness To Change from petroleum-fueled vehicle to electric vehicle?

I wanted to calculate the probability of one consumer shifting from using a petroleum-fueled vehicle to an electric vehicle. Since my background is in engineering I do not know much about how to...

15 February 2021 9,190 5 View

Anders S.G. Andrae

Dear Dr. Moriarty.

I my opinion, to decrease the spread for "identical" entities:

1.Industry specific standardisation which forces all practitioners to be transparent on algorithms, studied product system, cut-off, and exclusions

2. Product/process category rules which lock every choice for all metrics which shall be calculated.

I am amazed by the number of definitions of "energy-pay-back-time" used by different researchers in renewable power supply. The same goes for different scope and system boundary.

Hamit Can

http://www.sciencedirect.com/science/article/pii/S0301421516301379