Solar Panel Cleaning Formulation for Dust and Microbial Fouling

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Solution Overview

Problem

Dust and microbial fouling on solar panels reduce sunlight penetration, leading to power loss and efficiency decline, with existing cleaning methods like water cleaning being inefficient and water-scarce areas posing additional challenges.

Innovation Solution

A solar panel cleaning formulation comprising a surfactant, urea, a mild acid, and an antimicrobial agent, specifically including a novel antibacterial compound, enhances cleaning efficiency by improving voltage output, antimicrobial activity, and reducing corrosiveness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If water is used to clean solar panels, then dust removal is achieved, but cleaning efficiency is insufficient and water consumption is high

Engineering Contradiction:
Improvewater consumptionVSAvoidcleaning efficiency
Core Design Contradiction:
Loss of substanceVSProductivity

Solution Approach 1:

The invention changes the chemical parameters of the cleaning solution by incorporating specific surfactants (anionic, cationic, nonionic), mild acids (citric acid, phosphoric acid, acetic acid), and urea in optimized concentrations. This chemical parameter modification enables effective dust and microbial removal with reduced water consumption compared to plain water cleaning

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The cleaning formulation uses a composite approach by combining multiple cleaning agents (surfactants, acids, urea) and antimicrobial compounds in a single solution. This composite formulation achieves superior cleaning efficiency and antimicrobial activity while reducing water usage, resolving the contradiction between cleaning effectiveness and water consumption

Inventive Principle:
Principle #40Composite materials

2Reliability

If conventional cleaning formulations are used, then dust removal is achieved, but antimicrobial activity is insufficient

Engineering Contradiction:
Improveantimicrobial activityVSAvoidformulation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention merges cleaning functions with antimicrobial functions into a single formulation. By combining surfactants, mild acids, urea, and specific antimicrobial agents (phenothiazine derivatives, quaternary ammonium compounds) in one solution, it simultaneously achieves dust removal and microbial inhibition, enhancing reliability without excessive formulation complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The cleaning formulation is designed with multi-functionality, serving both as a cleaning agent for dust removal and as an antimicrobial agent for microbial fouling prevention. This universal formulation addresses multiple issues (dust, organic deposits, microbial growth) with a single product, improving antimicrobial activity while maintaining manageable formulation complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If strong cleaning agents are used to remove dust, then cleaning efficiency is improved, but corrosiveness to the panel surface increases

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidcorrosiveness
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The invention changes the strength parameters of the cleaning agents by using mild acids (citric acid, phosphoric acid, acetic acid) instead of strong acids, and selecting surfactants with appropriate HLB values. This parameter optimization maintains cleaning efficiency while significantly reducing corrosiveness to the solar panel surface and surrounding environment

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The formulation uses biodegradable and environmentally friendly components that are less corrosive but effective for cleaning. The mild acids and surfactants provide sufficient cleaning power for regular maintenance without causing long-term damage to the panel surface, balancing cleaning efficiency with reduced harmful effects

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Loss of energy

If frequent cleaning is performed to maintain efficiency, then power loss is reduced, but water consumption and operational cost increase

Engineering Contradiction:
Improvepower loss from foulingVSAvoidwater consumption
Core Design Contradiction:
Loss of energyVSQuantity of substance

Solution Approach 1:

The formulation provides continuous protective action by incorporating antimicrobial agents that prevent microbial fouling buildup over time. This continuous protection reduces the frequency of cleaning interventions needed, thereby reducing overall water consumption while maintaining power generation efficiency and reducing energy loss from fouling

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The cleaning formulation performs preliminary antimicrobial action by preventing microbial adhesion and biofilm formation before they can significantly impact panel efficiency. This preliminary protection reduces the need for frequent intensive cleaning, lowering water consumption and operational costs while maintaining energy production

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The formulation achieves higher voltage output, better antimicrobial properties, and low-corrosive behavior, effectively removing dust and microbial fouling, with SR-01 and SR-02 formulations showing over 99% microbial inhibition and improved voltage increase compared to commercial samples.

Implementation Method 1

a solar panel cleaning formulation comprising a surfactant, urea, a mild acid, an antimicrobial agent and water

Methodology Applied
Scientific EffectSurfactant: Surfactant

Implementation Method 2

a solar panel cleaning formulation comprising a surfactant, urea, a mild acid, an antimicrobial agent and water

Methodology Applied
Scientific EffectChemical dissolution: Solvation

Implementation Method 3

an antimicrobial agent specifically including a novel antibacterial compound

Methodology Applied
Scientific EffectAntimicrobial action:

Data Source

PatentUS20250283010A1Solar panel cleaning formulation
Publication Date: 2025.09.11 HINDUSTAN PETROLEUM CORP LTD
  • US20250283010A1 patent drawing
  • US20250283010A1 patent drawing
  • US20250283010A1 patent drawing

AI summary

Solar panel cleaning formulations are disclosed herein. In accordance with some aspects, provides is a solar panel cleaning formulation that comprises a surfactant, urea, a mild acid, an antimicrobial agent and water. In some cases, the solar panel cleaning formulation comprises an antimicrobial agent comprising a novel antibacterial compound disclosed herein.